BORGES, C. R. DE A.; AZEVEDO, M. DE; LIMA, I. DE A.; BRASIL, L. H. DE A.; FERREIRA, M. DE A. <b>Heterogeneous genetic cows of three genetic groups in feedlot system in the state of Pernambuco, Brazil</b&gt; - 10.4025/actascianimsci.v34i1.11306. Acta Scientiarum. Animal Sciences, v. 34, n. 1, p. 91-96, 9 jun. 2011.