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An assessment of the 1996 Beef NRC: Metabolizable protein supply and demand and effectiveness of model performance prediction of beef females within extensive grazing systems 期刊论文
发表期刊: JOURNAL OF ANIMAL SCIENCE. 出版年: 2014, 卷号: 92, 期号: 7, 页码: 2785-2799
作者:  Waterman, R. C.;  Caton, J. S.;  Loeest, C. A.;  Petersen, M. K.;  Roberts, A. J.
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amino acid  ammonia  cow  grazing  rumen