Historical examination of culling of dairy cows from herds in the United States.

被引:0
|
作者
Norman, H. D. [1 ]
Hare, E. [1 ]
机构
[1] USDA ARS, Anim Improvement Programs Lab, Beltsville, MD USA
关键词
culling; herd life; survival;
D O I
暂无
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
引用
收藏
页码:122 / 122
页数:1
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