ANTIBIOTICS IN DAIRY CATTLE NUTRITION .4. COMPARATIVE EFFECTS OF DIFFERENT LEVELS OF CRYSTALLINE AUREOMYCIN AND A CRUDE AUREOMYCIN FERMENATION PRODUCT (AUROFAC-2A) ON THE GROWTH AND WELL-BEING OF YOUNG DAIRY CALVES
D O I:
10.3168/jds.S0022-0302(54)91357-0
中图分类号:
S8 [畜牧、 动物医学、狩猎、蚕、蜂];