小牛出生之后就被迫与牠们的母亲分开。牠们被喂食从母牛的血液提炼制造出来奶代品。
The calves are separated from their mothers at birth. They're being fed milk replacer that's made in part from cow's blood.
本文从骨钙代谢和蛋白质代谢两个方面进行研究，旨在探讨多代饮奶对小鼠骨钙代谢和蛋白质代谢的影响，为进一步阐明长期多代饮奶对动物乃至人类健康的影响积累资料。
This study deals with the two aspects of bone and protein metabolism in order to explore the effect of long-term drinking milk on the bone and protein metabolism in mice.
目的：研究多代饮用牛奶对小鼠血钙、血清碱性磷酸酶（ALP）、骨钙素（BGP）等骨钙代谢指标的影响，以探讨多代饮奶对骨钙代谢的影响规律。
Objective: To study the effect of multi-generation drinking milk on the bone metabolizing factors such as serum calcium, ALP, BGP, etc.
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