SEASONAL CALVINGS BY LACTATION IN R.O.P.-TESTED HOLSTEIN-FRIESIAN HERDS IN RELATION TO CONTEMPORARY COMPARISONS

被引:1
作者
GRAVIR, K
HICKMAN, CG
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D O I
10.4141/cjas65-032
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
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页码:181 / &
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[5]  
OCONNOR LK, 1961, USE MILK RECORDS SEL