BMPR-IB基因多态性与河北肉用绵羊产羔数及羔羊生长发育的相关性研究  

Correlation study on polymorphism of BMPR-IB gene with litter size and growth and development in Hebei mutton sheep

作　　者：孙洪新[1] 敦伟涛[1] 陈晓勇[1] 田树军[2] 谭薇 

机构地区：[1]河北省畜牧兽医研究所,河北保定071000 [2]河北农业大学动物科技学院,河北保定071001 [3]中牧实业股份有限公司技术中心,北京100070

出　　处：《黑龙江畜牧兽医》2011年第7期7-9,共3页Heilongjiang Animal Science And veterinary Medicine

基　　金：河北省科技支撑计划项目(06220402D-3)

摘　　要：为了研究BMPR-IB基因单核苷酸多态性及其对绵羊产羔数和羔羊生长发育的影响,试验采用PCR-RFLP方法对小尾寒羊、杜泊、德克赛尔及河北肉用绵羊的BMPR-IB基因单核苷酸多态性进行了测定,并对BMPR-IB基因多态性与河北肉用绵羊产羔数和生长发育的关系进行了研究。结果表明:基因型频率在各品种间分布极不平衡,BB基因型河北肉用绵羊群体的总体平均产羔数显著高于B+基因型(P<0.05),极显著高于++基因型群体(P<0.01);90日龄时,++基因型河北肉用绵羊的胸宽和腰角宽显著高于B+基因型群体(P<0.05)。说明BMPR-IB基因的基因型对河北肉用绵羊羔羊的生长发育有一定影响。To study the effect of polymorphism of BMPR - IB gene and its correlation with litter size and body size within sheep. The DNA sam- ples were collected and amplified by PCR -RFLP method from Smal! -tailed Han sheep, Texel, Dorper and Hebei mutton sheep. THe rela- tionship between the polymorphism of BMPR - IB gene and prolificacy as well as growth and development were analyzed. The results showed that the genotype frequency of BMPR - IB gene was significantly different in these breeds. The analysis results of litter size and body size within Hebei mutton sheep showed that sheep with genotype BB had a greater total litter size than those with genotype B ＋ （ P 〈 0. 05 ） and ＋ ＋ （ P 〈 0. 01 ） . At age of 90 days, the lambs with genotype ＋ ＋ was significantly greater than those with geno type B ＋ in chest width and hip width （P 〈 0. 05 ）, these findings indicated that the genotype of BMPR -IB gene could affect growth and development of Hebei mutton sheep.

关 键 词：BMPR—IB基因 河北肉用绵羊 产羔数 体尺 

分 类 号：S813.3[农业科学—畜牧学]