荷斯坦牛体型线性性状对泌乳量的主成分分析  

Principal Component Analysis between Body Conformation Linear Traits and Milk Yield in Holstein Cows

作　　者：程郁昕[1] 江汪洋[2] 许春香[2] 

机构地区：[1]安徽技术师范学院动物科学系,安徽凤阳233100 [2]安徽淮南乳品公司,安徽淮南232000

出　　处：《黄牛杂志》2003年第4期5-7,共3页Journal of Yellow Cattle Science

基　　金：安徽省教育厅自然科学基金(2000JL057)

摘　　要：在荷斯坦牛体型性状与泌乳量相关性分析的基础上进行主成分分析,选取累计贡献率达85％以上的前9个主成分,并进行这9个主成分与泌乳量的相关分析。结果表明,主成分Ⅰ、Ⅱ是荷斯坦牛泌乳量选择时应考虑的主要指标。Principal component analysis based on correlation analysis between body conformation linear traits and milk yield was conducted, the first nine components whose cumulative contribution were accumulated more 85% were selected, and the correlation relationship was studied between them and milk yield. The results showed that the principal components I and I were the key indexes to be considered while milk yield of Holstein cows was rselected.

关 键 词：荷斯坦牛 体型线性性状 泌乳量 主成分分析 相关性 选择育种 

分 类 号：S823.2[农业科学—畜牧学]