文献类型： 外文期刊
作者： Wang, Xiaoyan 1 ; Zhou, Chenyu 1 ; Zheng, Yao 1 ; Yu, Miao 1 ; He, Jia 1 ; Chen, Cai 1 ; Qiao, Suwei 1 ; Moawad, Ali Shoaib 1 ; Tian, Guoxing 4 ; Li, Bixia 5 ; Song, Chengyi 1 ;
作者机构： 1.Yangzhou Univ, Coll Anim Sci & Technol, Yangzhou, Peoples R China
2.Int Joint Res Lab Univ Jiangsu Prov China Domest A, Yangzhou, Peoples R China
3.Kafrelsheikh Univ, Fac Agr, Dept Anim Prod, Kafrelsheikh, Egypt
4.Jintan Mi Pig Breeding Farm, Changzhou, Jiangsu, Peoples R China
5.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing, Peoples R China
关键词： Mi pig; retrotransposon insertion polymorphisms; SINE; genetic diversity; population structure
期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 12 卷
页码：
收录情况： SCI
摘要： Mi pigs, a Chinese native breed found in Jintan and Yangzhong in Jiangsu Province, were recorded as having only a few hundred members in the latest national livestock and poultry genetic resources survey. To explore their conservation and breeding prospects, 18 SINE Retrotransposon Insertion Polymorphisms (sine-rips) were analyzed using PCR to assess the population structure and genetic diversity of Mi pigs. These pigs were grouped into eight families based on a UPGMA phylogenetic tree. The genetic distances between the Mi pig populations and commercial breeds ranged from 0.3712 to 0.7609, indicating significant divergence. Conversely, they showed a closer genetic relationship with other local Jiangsu breeds, with distances varying from 0.0943 to 0.6122, a finding supported by the UPGMA tree. The populations displayed a substantial degree of outbreeding, with Fis values from -0.4744 (M5) to -0.0847 (M8) and Fst values from 0.0534 (M3, M8) to 0.2265 (M2, M7), highlighting their genetic diversity which is crucial for the conservation of Mi pigs. Despite this diversity, the population sizes were uneven, with M5, M7, and M8 having 6, 5, and 7 individuals, respectively. These findings lay a theoretical foundation for the ongoing conservation and breeding efforts for Mi pigs.
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