Addition of a blend of exogenous enzymes to broiler chickens diets: impacts on performance and production costs

ABSTRACT Broiler diets are based on corn, soybean and wheat production; however, some protein ingredients have many antinutritional factors low digestibility. The objective of this study was to add a blend exogenous enzymes the feed with nutritional value for broilers reduce production costs improve digestibility while maintaining good zootechnical performance. experimental design completely randomized, including three treatments five replications (n=15) each: a) positive control (PC), diet calculated males average performance; b) negative + (NC+EE), minimum nutrient according requirements phase, enzymatic added; c) (NC), levels nutrients each phase. At 21 days, PC group showed greater weight gain lower conversion than NC (P<0.05). 42 had intake (P=0.040), observed in groups NC+EE (P=0.001). efficiency index higher treatment, but treatment Considering body weight, we found that birds profitability. Therefore, conclude added minimal has practical application broiler system.