Sefrin, A.R., Lucci, C. de S. and Melotti, L. 1997. Ruminai degradability of soybean oil meal and coast-cross hay, with canulated steers fed different ratios of roughageconcentrate in their diets. Brazilian Journal of Veterinary Research and Animal Science. 34, 1 (Feb. 1997), 31-36. DOI:https://doi.org/10.11606/issn.2318-3659.v34i1p31-36.