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每日出奶牛百分率根据每头母牛年产一胎,2个月干乳期计算,正常牛群平均每日出奶牛百分率为83%,如一牛群的平均出奶牛百分率低于此数,说明配种和管理情况不良
anim.husb. percent day in milk; percent days in milk
每日出奶牛百分率
repr.biol. percent day in milk; percent days in milk