2018Zhongguo xumu zazhiRequires access

Investigation of the effects of the age at first calving of Holstein cows on the milk yield of the first parity.

Bin Zhang, He Liu, Kai Shi, Wang Yu, Jianxin Liu, Liu Hong-yun

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Key concepts: Parity (physics), Ice calving, Animal science, Holstein Cattle, Biology, Yield (engineering), Dairy cattle, Lactation

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Investigation of the effects of the age at first calving of Holstein cows on the milk yield of the first parity. — Research Paper | ScholarLens