摘要
[目的]指导西藏那曲成年母牦牛的实际生产及选育工作。[方法]以西藏那曲县测量的32组成年母牦牛相关数据为基础,分析了体重与体高、体长、胸围、管围的相关性,并建立了估测那曲成年母牦牛体重的回归模型。[结果]那曲成年母牦牛体重与体高、体长、胸围、管围相关系数分别为0.906、0.612、0.047、0.977,经检验,体高、管围与体重的相关系数达到极显著水平(P<0.01),体长与体重的相关系数达到显著水平(0.01<P<0.05),胸围与体重的相关系数不显著(P>0.05)。得到了2个估测那曲成年母牦牛体重的回归模型,估测值与实测值之间的相关程度分别为0.989和0.977,达到极显著水平(P<0.01)。[结论]那曲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。
[Objective] To guide the practical production and breeding of adult female yak in Naqu of Tibet.[Method] According to the measured data of 32 groups of adult female yak in Naqu County of Tibet,the correlation of their body weight with body height,body length,heart girth and cannon circumference was analyzed,and then the regression model for forecasting the weight of adult female yak was established.[Result] The correlation coefficients of the body weight with body height,body length,heart girth and cannon circumference were 0.906,0.612,0.047,0.977;the correlation between body height,cannon circumference and body weight reached the extreme significance level（P0.01）,and that between body length and body weight reached significance level（0.01P0.05）,while that between heart girth and body weight was not significant（P0.05）.Two body weight forecasting regression models were obtained,the correlations between the forecasted value and measured value were 0.989 and 0.977,reaching the extremely significance level at 0.01 level.[Conclusion] The body weight of adult female yak showed obvious linear correlation with its body height,body length,heart girth and cannon circumference.
出处
《安徽农业科学》
CAS
北大核心
2011年第16期9715-9716,共2页
Journal of Anhui Agricultural Sciences
关键词
牦牛
体重
相关系数
回归模型
Yak
Body weight
Correlation coefficient
Regression model
作者简介
穷达（1972-），男，藏旋，西藏拉萨人，讲师，从事畜牧专业教学与科研工作。
