Valente, E.E.L. Paulino, M.F. Detmann, E. Valadares Filho, S. de C. Cardenas, J.E.G. Dias, I.F.T. Requirement of energy and protein of beef cattle on tropical pasture Subjects--Topical Terms: GADO DE CORTEPASTAGEMEXIGENCIA NUTRICIONALSUPLEMENTO ALIMENTAR