EFFECT OF FEMALE CULLING AND AGE DISTRIBUTION OF DAIRY-HERD ON PROFITABILITY

被引：33

作者：

PEARSON, RE

FREEMAN, AE

机构：

[1] IOWA STATE UNIV, DEPT ANIM SCI, AMES, IA 50010 USA

[2] USDA, ARC, ANIM PHYSIOL & GENET INST, BELTSVILLE, MD 20705 USA

来源：

关键词：

D O I：

10.3168/jds.S0022-0302(73)85383-4

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

页码：1459 / 1471

页数：13

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[7]

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[9]

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[10]

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