大农场会人工受精提高效率。公牛精力太旺盛了如果有一只的话一个小农场几十只母牛根本不是对手，生完很快就自然被怀孕了

来源: xianrenzhang. 于 2018-06-15 17:06:41 [旧帖] [给我悄悄话] 本文已被阅读：次

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