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荷斯坦奶牛维持净能需要量的测定及影响因素 被引量:5

Approaches of determining NEm and Factors Affecting NEm of Dairy Cattle
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摘要 介绍2种评定奶牛维持净能需要(NEm)的方法及其优缺点;并分析了造成近20年荷斯坦奶牛NEm提高的原因。 The review introduced two approaches used to determine the net energy requirement for maintenanee(NEm) of dairy cattle and compared their merits and defects, and summarized the factors contributing to increasing NEm of Holstein dairy cattle during the last two decades.
出处 《中国畜牧杂志》 CAS 北大核心 2006年第23期41-44,共4页 Chinese Journal of Animal Science
关键词 畜牧学 维持净能需要 综述 绝食代谢 线性回归 奶牛 animal science NEm a review fasling metabolism linear regression dairy cow
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