中国荷斯坦奶牛K-酪蛋白基因多态性与泌乳性能关联性分析

Correlation Analysis of K-casein Gene Polymorphism and Lactation Performance in China Hesitan Cow

本研究采用PCR-RFLP技术检测新疆地区中国荷斯坦奶牛K-CN基因多态性,并分析了该基因多态性与奶牛泌乳性能的关系。结果表明:检测群体K-CN基因表现出三种基因型:AA、AB、BB,基因型频率分别为0.6171、0.3278、0.0551,且达到平衡状态。三种基因型与泌乳性状的关联性分析表明,B基因对中国荷斯坦奶牛乳脂率有显著影响。

The present paper determ the k-casein gene polymorphism by PCR-RFLP method, and analyzed Correlation of k-casein gene polymorphism and Lactation performance in china hesitan cow. The result show that the k-casein gene have 3 Genotypes in detection group, those are AA, AB and BB types, the Gene Frequency are 0.6171, 0.3278 and 0.0551 respectively. Correlation Analysis show that B gene have a remarked effect on butterfat rate in china hositan cow.