Department of Animal Science, College of Animal Science, Zhejiang University, Hangzhou, China.
Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Anim Genet. 2022 Aug;53(4):506-509. doi: 10.1111/age.13208. Epub 2022 Apr 30.
Chinese indigenous pig breeds have been undergoing selection for thousands of years, and have become invaluable genetic sources over the world. To investigate the population structure and genetic diversity of Jinhua (JH), Longyou Black (LYW), Shengxian Spotted (SXH), and Lanxi Spotted (LXH) breeds, a total of 200 pigs belonging to 10 diverse population were genotyped using SNP chips. The results showed that LYW pigs exhibited higher level of heterozygosity than the other indigenous pigs. In addition, gene introgression from intensively reared commercial pig breeds to LYW pigs was detected. Moreover, selection signature analysis revealed the possibility of differences between Chinese indigenous and intensively reared commercial pig breeds were mainly present for meat and carcass traits. Furthermore, we found that ANXA13, DISP1, and SRSF6 were the nearest genes located around the common selection signatures detected between each indigenous pig breed and Chinese wild boars. Our findings provide new insights into the selection signatures of Chinese indigenous pigs, and may contribute to future pig breeding.
中国本土猪种经过数千年的选育，已成为全球宝贵的遗传资源。为了研究金华猪（JH）、龙游黑猪（LYW）、寿鲜花猪（SXH）和兰溪花猪（LXH）的群体结构和遗传多样性，对来自 10 个不同群体的 200 头猪进行了 SNP 芯片基因分型。结果表明，LYW 猪的杂合度水平高于其他本土猪。此外，还检测到从密集养殖的商业猪品种向 LYW 猪的基因渗入。此外，选择信号分析表明，中国本土和密集养殖的商业猪品种之间的差异主要存在于肉质和胴体性状上。此外，我们发现 ANXA13、DISP1 和 SRSF6 是位于每个本土猪种和中国野猪之间共同选择信号附近的最近基因。我们的研究结果为中国本土猪的选择信号提供了新的见解，并可能有助于未来的猪育种。
