02431naa a2200337 a 450000100080000000500110000800800410001902400410006010000170010124501140011826000090023250001450024152012870038665000160167365000130168965000160170265000220171865000180174065300260175865300230178465300210180765300200182865300240184870000190187270000210189170000210191270000200193370000250195370000240197877300910200220761592018-02-23       2017    bl uuuu     u00u1 u    #d7 a10.1590/S0100-204X20170005000092DOI1 aCOSTA, P. M.  aPerformance of crossbred steers post-weaned in an integrated crop-livestock system and finished in a feedlot.  c2017  aTítulo em português: Desempenho de bovinos cruzados, recriados em sistema de integração  lavoura-pecuária e terminados em confinamento.  aThe objective of this work was to evaluate the performance of crossbred steers post-weaned in an integrated crop-livestock system (ICL) and finished in a feedlot, fed either a high-level concentrate diet or whole corn with no roughage. Weaned calves of two breed groups ? ½ Angus × ½ Nellore, and ½ Charolais × ¼ Angus × ¼ Nellore ? were allotted in a completely randomized experimental design (CRD). During the rainy season, the ½ Angus × ½ Nellore animals showed a higher performance than the ½ Charolais × ¼ Angus ×¼ Nellore ones, with 0.748 and 0.490 kg average daily gain, respectively. The productivity in the post-weaning period was 926 kg ha-1 body weight in a 11-month period, in the ICL system. Subsequently, the animals were confined and fed high-concentrate diet or whole corn with no roughage, in a CRD with a 2×2 factorial arrangement. In the feedlot, the ½ Charolais × ¼ Angus × ¼ Nellore animals showed lower values for carcass average daily gain, carcass yield, and slaughter weight than the ½ Angus × ½ Nellore animals. The high productivity in the ICL shows that this strategy, associated with the use of crossbreeding during the post-weaning and finishing stages, can be indicated for the new demand for a sustainable livestock activity.  aBeef cattle  aCrossing  aFeed intake  aConsumo alimentar  aGado de corte  aCruzamento industrial  aIntegrated systems  aIntensificação  aIntensification  aSistemas integrados1 aBARBOSA, F. A.1 aALVARENGA, R. C.1 aGUIMARAES, S. T.1 aLAMPEÃO, A. A.1 aWINKELSTROTER, L. K.1 aMACIEL, I. C. de F.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 52, n. 5, p. 355-365, maio, 2017.