麦洼牦牛体型线性性状的因子分析  

Factor Analysys on Body Linear Type Traits of Meiwa Yak

作　　者：文勇立[1] 林小伟[2] 钟光辉[1] 袁季广[2] 左学明[3] 纳花 

机构地区：[1]西南民族学院生命科学院,四川成都610041 [2]四川省畜禽改良总站 [3]阿坝州家畜改良站 [4]四川省龙日种畜场

出　　处：《畜禽业》2002年第6期2-3,共2页Livestock and Poultry Industry

基　　金：四川省畜牧食品局95重点科技项目"麦洼牦牛种质资源保存与开发利用研究"的一部分。

摘　　要：对170头麦洼牦母牛的8个线性性状进行因子分析,提取到3个因子,累积方差贡献率达89.601%,第1因子主要解释了麦洼牦母牛体形结构的整体均衡性,被命名为整体结构因子。3个因子表达式用于麦洼牦母牛体型评估,具有较高的选育和经济价值。Factor analysis for eight linear type traits was conducted from170adult Meiwa female yaks.Three factors were distilled for the male and their cumulative eigenvalues of variance accounted for89.601%of the total variance in type scores.According to rotated component matrix the first of these was called as the Body integrated factor.The formulas of there factors can be applied to evaluate the capability of Meiwa female yak and which has the great value for breeding and production.

关 键 词：性状因子 系数矩阵 方差分布碎石图 特征根向量 麦洼牦牛 体型 线性性状 

分 类 号：S823.85[农业科学—畜牧学]