小尾寒羊FecB基因型与产羔数相关的研究  

Relevance between BMPR-IB Genotypes and Litter Size in Small Tailed Han Sheep

作　　者：樊庆灿[1] 叶禄林[1] 柳楠[1] 蔡中锋 王新颜 曲绪仙[3] 原培勋[3] 

机构地区：[1]青岛农业大学动物科技学院,山东青岛266109 [2]山东省菏泽市畜牧工作站,山东菏泽274700 [3]山东省畜牧兽医总站,山东济南250022

出　　处：《安徽农业科学》2011年第20期12216-12218,共3页Journal of Anhui Agricultural Sciences

基　　金：山东省良种工程项目"地方优质肉羊新品种培育"

摘　　要：[目的]建立小尾寒羊高繁品系,检测BMPR-ⅠB基因的多态性,分析FecB基因基因型频率和产羔数的关系。[方法]选取小尾寒羊为研究对象,运用PCR-RFLP方法,分析BMPR-ⅠB基因突变位点。[结果]样品群中BB、B+和++基因型比例分别为25.45%,54.46%和20.09%;每胎次平均产羔数分别为3.01只、2.81只和2.16只。[结论]FecB基因可以作为小尾寒羊多胎性选育的分子遗传标记,FecB基因能够有效的提高小尾寒羊个体平均产羔数,对产羔数影响呈加性作用。[Objective] To detect the polymorphism of BMPR-IB gene and analyze the relevance between genotype frequency of FecB gene and litter size.[Method] Mutation sites in the BMPR-IB gene of Small Tailed Han sheep were analyzed by PCR-RFLP.[Result] The percentages of individuals with BB,B＋ and ＋＋ genotypes were 24.69%,54.89% and 20.42%,respectively,and their average litter size per parity was 3.01,2.81 and 2.16,respectively.[Conclusion] The BMPR-IB gene can be used as a molecular genetic marker in fecundity traits.The FecB gene can effectively increase litter size of the Small Tailed Han sheep and has additive action on litter size.

关 键 词：小尾寒羊 BMPR-ⅠB FECB PCR-RFLP 产羔数 

分 类 号：S826.8[农业科学—畜牧学]