Ribeiro, L. S. O.; Pires, A. J. V.; Carvalho, G. G. P. de; Pereira, M. L. A.; Santos, A. B. dos; Rocha, L. C. Fermentation Characteristics, Chemical Composition and Fractionation of Carbohydrates and Crude Protein of Silage of Elephant Grass Wilted or With Addition of Castor Bean Meal. Semina: Ciênc. Agrár. 2014, 35, 1447-1462.