Abstract: Abstract: Objective To analyze and evaluate the population genetic quality of 2 outbred BA-MA miniature pigs in Beijing． Method Twenty-five pairs of microsatellite primers were used in A group and B group outbred BA-MA miniature pigs according to the local standard DB11 /T828. 3 － 2011． And software Popgen32 was used to process the data． Ｒesult Twenty-five microsatellite loci shared 126 and 160 alleles in A group and B group outbred BAMA miniature pigs，respectively． The average heterozygosity was 0. 6541 and 0. 6973，respectively，while the average polymorphism information content ( PIC) was 0. 6037 and 0. 6605，respectively． The genetic distance between the two groups was 0. 2650． Conclusion B group BA-MA miniature pigs have adaptive genetic stability and genetic diversity，which satisfied with the genetic characteristics of closed colony laboratory animal．

Key words: <p>BA-MAminiature pig, genetic structure analysis, DB11 /T828. 3 － 2011</p>

摘要： 摘要: 目的 对北京地区两个封闭群巴马小型猪群体进行遗传质量评价与分析。方法 利用 DB11 /T828. 3 － 2011 中的 25 对微卫星引物，对 A、B 两个巴马小型猪群体进行微卫星分型及遗传参数计算。结果 A、B 两巴马小型猪群体分别得到 126 和 160 个等位基因，平均杂合度分别为 0. 6541、0. 6973，平均多态信息含量( PIC) 分别为 0. 6037、 0. 6605，两者的遗传距离为 0. 2650。结论 B 群巴马小型猪群体具有较好的遗传多样性和稳定性，符合封闭群动物的群体遗传特征。

关键词: <, p>, 巴马小型猪, 遗传结构分析, DB11 /T828. 3 － 2011<, /p>