AGES AT CALVING AND CALVING INTERVALS FOR DAIRY-CATTLE IN THE UNITED-STATES

被引:33
|
作者
NIEUWHOF, GJ
POWELL, RL
NORMAN, HD
机构
[1] UNIV MARYLAND,DEPT ANIM SCI,COLLEGE PK,MD 20742
[2] USDA ARS,BELTSVILLE AGR RES CTR,ANIM IMPROVEMENT PROGRAMS LAB,BELTSVILLE,MD 20705
关键词
D O I
10.3168/jds.S0022-0302(89)79160-8
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:685 / 692
页数:8
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