Association between growth rates, age at first calving and subsequent fertility, milk production and

来源 :动物科学期刊(英文) | 被引量 : 0次 | 上传用户:j_program
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Age at first calving (AFC) affects the profitability of dairy enterprises. This study examined the relationships between AFC and subsequent fertility, milk production and survival up to third calving in UK Holstein-Friesian heifers;Study 1 comprised 134 c
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