应用逐步回归法估测中国西门塔尔牛体重的研究  

Estimating the Weight of Chinese Simmental by Using Stepwise Regression

作　　者：贺建宁[1] 李俊雅[1] 许尚忠[1] 袁峥嵘[1] 甘乾福[1] 李姣[1] 周正奎[1] 高雪[1] 陈金宝[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,中国农业科学院肉牛研究中心,北京100193

出　　处：《中国畜牧兽医》2009年第9期199-201,共3页China Animal Husbandry & Veterinary Medicine

基　　金：“十一五”国家高技术863计划(2008AA10Z146);“十一五”国家科技支撑计划(2006BAD01A10)

摘　　要：本研究根据内蒙古乌拉盖地区某牛场牛的体长、体高、胸围、腹围、管围等体尺指数,应用逐步回归法,对牛的体重进行估测,并比较实测体重与估测体重之间的差异。得出估测中国西门塔尔牛体重的一般公式,按此公式所作的F和t检验均表明预测值与实际体重测定值无显著差异,其相关系数值达到0.952。Body weight, body length, wither height, heart girth, abdominal circumference, cannon bone circumference of 165 Chinese Simmental were measured. Estimating the body weight by using stepwise regression,and compared with the measured body weight. The formula of estimated body weight of Chinese Simmental has been received in this paper. F and t test of the formula indicates that the predicted and actual value had no significant difference,and the related coefficient is 0. 952.

关 键 词：体尺指数 逐步回归 估测体重 中国西门塔尔牛 

分 类 号：S823.911[农业科学—畜牧学]