| 摘要: |
| 对陕西蒲城县和渭南市临渭区5个不同年龄阶段815头秦川母牛的5项体尺和体重性状进行了主成分分析。结果表明，在不同年龄阶段，秦川母牛的6个性状之间存在着不同程度的正相关；其生长发育过程中的第一主成分均为增重因子，其次是增高因子和宽度因子。 |
| 关键词: 秦川母牛 体重 体尺 主成分分析 |
| DOI： |
| 分类号: |
| 基金项目:陕西省农业重点专项“秦川肉牛的选育” |
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| Principal component analysis of body measurement and weight of Qinchuan cow at different age phases |
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| Abstract: |
| The 5 body measurements and weight of 815 Qinchuan cows at five different age phases are studied by principal component analysis.The results showed that at 5 age phases there are direct correlations of different levels among all the traits.The first principal component is the weight at all the age phases and then height and width. |
| Key words: Qinchuan cow weight body measurement principal component analysis |
