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RESUMO - O consumo diário de matéria seca (CPUPV), a conversão alimentar (CONV) e o ganho de peso médio diário (GMD) de 80 machos bovinos inteiros Charolês (Ch), Caracu (Ca) e seus cruzamentos recíprocos (ChCa e CaCh) gerados pelo cruzamento alternado Ch x Ca foram analisados. Todos os animais foram alimentados em baias individuais por períodos de 76 a 97 dias, quando receberam silagem de milho à vontade e concentrado contendo 17,8% PB e 79% NDT fornecido à base de 1% PV/animal/dia. As três características foram analisadas inicialmente em função do período de alimentação, sendo o período total dividido em três sub-períodos e, posteriormente, no período total. As médias gerais para as três características, considerando-se o período total, foram 2,25 kg de MS/100 kg PV/dia, 6,75 kg MS/kg de GMD e 1,587 kg/dia, respectivamente, para CPUPV, CONV e GMD. Na análise por período, o grupo genético (GPO) influenciou CPUPV e GMD, mas não a CONV. A interação GPO x período não mostrou efeito para qualquer das três características. O Ch superou o Ca para CONV (-0,861 kg de MS/kg de GMD) e GMD (0,163 kg/dia). A diferença recíproca (ChCa - CaCh) foi significativa para as três características, e o ChCa foi melhor que o CaCh. Houve efeito da heterose sobre o GMD. O cruzamento alternado Ch x Ca igualou-se ao Ch e superou o Ca. ABSTRACT - Daily dry matter intake (CPUPV), feed:gain ratio (CONV) and average daily gain (ADG) of 80 Charolais (Ch), Caracu (Ca) and reciprocal crossbred (ChCa and CaCh) males were analyzed. The ChCa and CaCh were generated by rotational Ch x Ca crossbreeding. All animals were fed in individual stalls for 76 to 97 day periods receiving corn silage ad libitum and a concentrate containing 17.8% CP and 79% TDN fed 1% LW/animal•day. The three traits were analyzed first as a function of period, when the total period was divided into three sub-periods, and, later, in the total period. General means for CPUPV, CONV and ADG were, respectively, 2.25 kg DM/100 kg LW/day, 6.75 kg DM/kg ADG and 1.587 kg/day. In the analysis by period, the genetic group (GPO) influenced all traits, except for CONV. GPO x period interaction was not significant for any of the three traits. The Charolais was better than the Ca for CONV (-0.861 kg of DM was /kg of ADG) and for ADG (0.163 kg/day). The difference (ChCa - CaCh) was significant for the three traits, and the ChCa was better than its reciprocal. The effect of heterosis was significant for ADG only. Rotational Ch x Ca crossbreeding was equal to Charolais and superior than Caracu

Consumo e conversão alimentar de machos bovinos inteiros Charolês, Caracu e cruzamentos recíprocos em confinamento