RIBEIRO, L. A.; ROCHA, M. G. DA; PÖTTER, L.; SICHONANY, M. J. DE O.; SILVA, M. F. DA; HUNDERTMARCK, A. P. <b&gt;Efficiency of the use of ryegrass by heifers in response to the receival of supplement. Acta Scientiarum. Animal Sciences, v. 39, n. 1, p. 13-17, 7 fev. 2017.