RESUMOAvaliou-se a qualidade da carne de 10 bovinos F1 Guzerá-Nelore e 10 F2 Pardo Suíço-Guzerá-Nelore, inteiros, e abatidos precocemente. Na avaliação da carne, foi utilizado o músculo Longissimus dorsi. O delineamento experimental foi o inteiramente ao acaso. Verificaram-se para F1 e F2, respectivamente, médias para umidade de 75,3 e 75,1, extrato etéreo de 1,4 e 1,5, proteína de 23,7 e 23,6 e cinzas de 1,04 e 1,06. Cor em L* de 28,9 e 30,3, médias para cor em a* de 22,6 e 23,4 e cor em b* de 15,3 15,4, força de cisalhamento de 3,4 e 3,5, perda de peso pelo descongelamento de 9,8 e 10,5 e perda pelo cozimento de 15,9 e 15,6. Não houve diferença estatística para nenhuma das variáveis analisadas entre os grupos genéticos.Palavras-chave: cruzamentos, extrato etéreo, gado de corte, Longissimus dorsi, qualidade da carne F1 and F2 was respectively 75,3 and 75,1 averages, 1,4 and 1,5 averages for ether extract, proteins were 23,7 and 23,6 and 1,04 and 1,06 averages for ash. The results for F1 and F2, respectively, with averages for color to L * of 28,9 and 30,3, averages for the color to a* of 22,6 and 23,4 and color to b * 15,3 and 15,4, averages for shear force of 3,4 and 3,4, weight loss by thawing of 9,8 and 10,5 and weight lost by cooking of 15,9 and 15,4. There were no differences in genetic groups analysis. ABSTRACT The purpose of this study was to use instrumental analysis to evaluate the chemical composition and fatty acid profile of 10 cattle Guzerath-Nellore (F1) and 10 Brown Swiss-Guzerath-Nellore (F2), intact and feedlot finished and slaughtered at 13 months. The Longissimus dorsi was used for meat evaluation. The experimental design was completely randomized. Humidity for
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