| Molecular characterization, tissue distribution and expression analysis of TRIM25 in Gallus gallus domesticus | |
| Feng ZQ1; Cheng Y1; Yang HL1; Zhu Q1; Yu DD2; Liu YP*1; liuyp578@yahoo.com | |
| 2015 | |
| 发表期刊 | GENE
 |
| 卷号 | 561期号:1页码:138-147 |
| 合作性质 | 其它 |
| 摘要 | TRIM25, a member of the tripartite motif-containing (TRIM) family of proteins, plays an important role in cell proliferation, protein modification, and the RIG-I-mediated antiviral signaling pathway. However, relatively few studies have investigated the molecular characterization, tissue distribution, and potential function of TRIM25 in chickens. In this study, we cloned the full-length cDNA of chicken TRIM25 that is composed of 2706 bp. Sequence analyses revealed that TRIM25 contains a 1902-bp open-reading frame that probably encodes a 633-amino acid protein. Multiple comparisons with deduced amino acid sequences revealed that the RING finger and B30.2 domains of chicken TRIM25 share a high sequence similarity with human and murine TRIM25, indicating that these domains are critical for the function of chicken TRIM25. qPCR assays revealed that TRIM25 is highly expressed in the spleen, thymus and lungs in chickens. Furthermore, we observed that TRIM25 expression was significantly upregulated both in vitro and in vivo following infection with Newcastle disease virus. TRIM25 expression was also significantly upregulated in chicken embryo fibroblasts upon stimulation with poly(I:C) or poly(dA:dT). Taken together, these findings suggest that TRIM25 plays an important role in antiviral signaling pathways in chickens. |
| 关键词 | Chicken Tripartite Motif Protein 25 Innate Immune Mrna Expression |
| 资助者 | This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助者 | This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). ; This study was supported by grants from the Open Fund of Sichuan ProvincialKeyLaboratoryofAnimalBreedingandGenetics,SichuanAn- imal Science Academy, Sichuan Province (grant nos.: 2011NZ0099-6, 11TD007, and 2011JTD0032), the National Science Foundation of China (grant no.: 31001006), and the Ministry of Agriculture of China (grant no.: 2009ZX08009-159B). |
| WOS记录号 | WOS:000351976900020 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kiz.ac.cn/handle/152453/8310 |
| 专题 | 科研部门_疾病机理遗传学和进化医学学科组（姚永刚） 科研部门_动物模型与人类重大疾病机理重点实验室 |
| 通讯作者 | liuyp578@yahoo.com |
| 作者单位 | 1.College of Animal Science and Technology, Sichuan Agriculture University, Ya'an, Sichuan 625014, China 2.Key laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Kunming, Yunnan 650223, China |
| 推荐引用方式 GB/T 7714 | Feng ZQ,Cheng Y,Yang HL,et al. Molecular characterization, tissue distribution and expression analysis of TRIM25 in Gallus gallus domesticus[J]. GENE,2015,561(1):138-147. |
| APA | Feng ZQ.,Cheng Y.,Yang HL.,Zhu Q.,Yu DD.,...&liuyp578@yahoo.com.(2015).Molecular characterization, tissue distribution and expression analysis of TRIM25 in Gallus gallus domesticus.GENE,561(1),138-147. |
| MLA | Feng ZQ,et al."Molecular characterization, tissue distribution and expression analysis of TRIM25 in Gallus gallus domesticus".GENE 561.1(2015):138-147. |
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| 2015042403.pdf（1955KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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