Energy and protein requirements of Holstein × Gyr crossbred heifers

Nutrient requirements in cattle are dependent on physiological stage, breed and environmental conditions. In Holstein × Gyr crossbred dairy heifers, the lack of data remains a limiting factor for estimating energy and protein requirements. Thus, we aimed to estimate the energy and protein requiremen...

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發表在:	Animal
Main Authors:	M.M.D. Castro, R.L. Albino, J.P.P. Rodrigues, A.L.L. Sguizzato, M.M.F. Santos, P.P. Rotta, J.S. Caton, L.E.F.D. Moraes, F.F. Silva, M.I. Marcondes
格式:	Article
語言:	英语
出版:	Elsevier 2020-01-01
主題:	growth maintenance metabolizable energy metabolizable protein net requirements
在線閱讀:	http://www.sciencedirect.com/science/article/pii/S1751731120000622