Mallmann, G. M.; Patino, H. O.; Silveira, A. L. F. da; Medeiros, F. S.; Knorr, M. Intake and Digestibility of Low-Quality Hay With Nonprotein Nitrogen Supplementation in Cattle. PAB 2006, 41 (2), 331-337. https://doi.org/10.1590/S1678-3921.pab2006.v41.7141.