西藏嘉黎成年母牦牛体重与体尺指标的相关与回归分析

[目的]分析嘉黎成年母牦牛体尺指标与体重的相关性,并进一步进行了估测体重的回归分析,以指导该品种的生产实际及选育工作。[方法]以西藏嘉黎县测量的64头嘉黎成年母牦牛的体尺数据为基础,分析了嘉黎成年母牦牛体重与体高、体长、胸围、管围的相关系数,同时,进一步分析了估测成年母牦牛体重的回归模型。[结果]嘉黎成年母牦牛体重与体高、体长、胸围、管围的相关系数分别为0.887、0.828、0.807、0.712,经检验,体高、体长、胸围、管围与体重的相关系数达到了极显著水平(P<0.01);得到了3个估测体重的回归模型,估测值与实测值之间的相关程度分别为0.854、0.787和0.843。[结论]嘉黎成年母牦牛体重与体高、体长、胸围、管围存在明显的线性相关。

Correlation and Regression Analysis of Body Weight and Body Size Indices in Adult Female Yak of Jiali in Tibet

[Objective] The research aimed to analyze the correlation between the body size indices and body weight of adult female yak of Jiali and further predict the regression analysis of body weight,so as to guide the production practice and breeding work of Jiali Yak.[Method] Based on the body size data of 64 Jiali adult female yaks measured in Jiali County of Tibet,the correlation coefficients between the body weight and body height,body length,chest circumference and cannon circumference of Jiali adult female y...