湖羊和小尾寒羊骨形成蛋白受体IB型基因多态性与泌乳性状的相关性分析  

Correlation analysis between BMPR- IB gene polymorphism and milk traits in Hu sheep and Han sheep

作　　者：李晓林[1] 牛志刚[1] 袁燕[1] 李列刚 周成全 史洪才[1] 

机构地区：[1]农业部草食家畜遗传育种与繁殖重点开放实验室/新疆维吾尔自治区畜牧科学院生物技术研究所,新疆乌鲁木齐830000 [2]新疆皇牛畜产品发展有限公司,新疆乌鲁木齐830000 [3]新疆米东区老龙河养殖基地,新疆乌鲁木齐830000

出　　处：《畜牧与兽医》2016年第8期32-35,共4页Animal Husbandry & Veterinary Medicine

基　　金：新疆维吾尔自治区科技重大专项(201230116-9)

摘　　要：为探究骨骼形成蛋白IB型受体基因（BMPR-IB）与泌乳性状的相关性,采用PCR-RFLP方法检测BMPR-IB在湖羊（41只）和小尾寒羊（30只）群体中的多态性,并分析了其泌乳期1~56 d的泌乳性状。结果显示：在湖羊群体中发现BB和B＋两种基因型,基因频率为0.965和0.035;与泌乳性状结合分析：BB基因型乳蛋白显著高于B＋型个体（P〈0.05）。小尾寒羊群体中发现BB、B＋和＋＋3种基因型,频率分别为0.27,0.4和0.33;＋＋型个体泌乳量极显著高于BB型个体（P〈0.01）,B＋型个体泌乳量显著高于BB型个体（P〈0.05）;从群体泌乳量来看为＋＋型〉B＋型〉BB型;＋＋型个体乳糖显著高于BB型个体（P〈0.05）。The study was conducted to detect bone morphogenetic protein receptor IB gene（ BMPR- IB） polymorphism in Hu sheep and Han sheep populations and analyzed its correlation with milk traits by using PCR- RFLP. The results showed that the gene frequencies of BB and B ＋ two genotypes in sheep populations were 0. 965 and 0. 035,respectively. Combined with milk traits analysis,BB genotype of milk protein was significantly higher than B ＋ genotype（ P 0. 05）. Frequencies of BB,B ＋ and ＋ ＋ genotypes in Han sheep population were0. 27,0. 4 and 0. 33. The result showed that the sheep lactation with ＋ ＋ genotype were significantly higher than that with BB genotype（ P 0. 01）,milk of B ＋ genotype significantly higher than that of BB genotype（ P 0. 05）. From the point of view of population lactation ＋＋ type B ＋ type BB type,the sheep with ＋ ＋ genotype lactose was significantly higher than that of BB genotype（ P 0. 05）.

关 键 词：湖羊 小尾寒羊 BMPR-IB 泌乳性状 

分 类 号：S852.6[农业科学—基础兽医学]