Inclusão Do Caroço De Algodão Em Rações De Alto Concentrado Constituído De Co-Produtos Agroindustriais Sobre O Desempenho Animal Em Tourinhos Confinados

Abstract

The objective was to evaluate the inclusion of cottonseed (0%, 10%, 20% and 30% in DM) in high concentrate diets containing 85% (hulls soybean in the ratio from 52.7 to 73.1% ad soybean meal from 0.0 to 10.2% in total ration dry mater for different levels of inclusion of whole cottonseed in the diet) and roughage 15% (bagasse sugarcane hydrolyzete) in the diets of bulls finished in feedlot on average daily gain (ADG), feed conversion (FC) and feed efficiency (FE). We used 32 bulls breed nelore with mean age of 36 months and body weight (BW) initial mean of 424 25 kg 90 days, distributed in completely randomized design. Data of ADG, FC and FA are submitted ANOVA and the differences obtained were tested using the regression equation at 5% probability. The inclusion of cottonseed (0%, 10%, 20% and 30%) in diets with high concentrate did not affect (P > 0.05) ADG, FC and FA of bulls finished in feedlot. The average value for ADG, FC and FA of bulls fed with different inclusion levels of cottonseed was 1.41 kg/day, 8.76 kilograms of DM/kg gain and 0.12 kg gain/kilogram of DM, respectively. Thus concluded that the inclusion of 30% of cottonseed in diets containing high concentrate, in the bulls finished in feedlot does not change the average daily gain, feed conversion and feed efficiency.