Zhu Mingfei, Wang Litong, Ma Zhibo, Mao Yangcang, Wang Guoshui, Zheng Rong, Zuo Bo, Wang Yizhen
Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
Zhejiang Tianpeng Group Co., Ltd., Jiangshan 324100, China.
Animals (Basel). 2024 Sep 12;14(18):2660. doi: 10.3390/ani14182660.
The Jiangshan black pig is an indigenous pig breed in China, renowned for its superior meat quality and adaptability to roughage. However, the population of Jiangshan black pigs has dwindled due to the introduction of cosmopolitan pig breeds and the outbreak of African swine fever, putting them at risk of extinction. To offer insights into the conservation and breeding of Jiangshan black pigs, this study involved 118 Jiangshan black pigs as the research subjects and employed the Zhongxin-1 Porcine Breeding Array PLUS chip to detect whole-genome SNPs. Additionally, various software tools were utilized to accurately analyze the genetic diversity, phylogenetic relationship, inbreeding coefficient, and pedigree structure of the Jiangshan black pig conservation population. The findings indicated that the effective population size (Ne) of the Jiangshan black pig was 4.9, with an average inbreeding coefficient of 0.253 within the population. A genetic relationship analysis identified that the 16 male pigs were clustered into four families, and the 100 female pigs were also assigned to these familial groups. Furthermore, two female pigs were classified as "other" due to their distant genetic relatedness to all the males. These results contribute to a better understanding of the current status of the conservation of the Jiangshan black pig population and offer a theoretical foundation for the development of conservation strategies.
江山黑猪是中国本土猪种，以其优良的肉质和对粗饲料的适应性而闻名。然而，由于外来猪种的引入和非洲猪瘟的爆发，江山黑猪的数量已经减少，面临灭绝的风险。为了深入了解江山黑猪的保护和育种情况，本研究以118头江山黑猪为研究对象，采用中芯一号猪育种芯片PLUS检测全基因组单核苷酸多态性（SNP）。此外，还利用各种软件工具准确分析了江山黑猪保种群的遗传多样性、系统发育关系、近亲繁殖系数和系谱结构。研究结果表明，江山黑猪的有效种群数量（Ne）为4.9，种群内平均近亲繁殖系数为0.253。遗传关系分析确定，16头公猪被聚类为四个家族，100头母猪也被分配到这些家族组中。此外，有两头母猪由于与所有公猪的遗传关系较远，被归类为“其他”。这些结果有助于更好地了解江山黑猪种群的保护现状，并为制定保护策略提供理论基础。
