Effect of Different Levels of Multi-Enzymes (Natuzyme Plus®) on Growth Performance, Carcass Traits and Meat Quality of Broiler Chicken

Background and Objective: Multi-enzymes has long been used in poultry nutrition to alleviate the anti-nutritional agents and improve the nutrient utilization.The response of multi-enzymes with respect of performance has been variable and there is an urgent need to identify the exact levels of supplementation for the commercial flocks.Therefore, the present study was designed to evaluate the effect of inclusion of different levels of multi-enzyme, Natuzyme Plus® on the parameters of growth performance, carcass characteristics and meat quality of broiler.Materials and Methods: Two hundred, unsexed, one day old (Ross 308) broiler chicks with initial weight of approximately 40 g were distributed in a completely randomized block design with four levels of Natuzyme Plus® (0, 0.5, 0.75 and 1 kg tG 1 ).Each group contains 5 repetitions with ten chicks each.Data were analyzed by one-way analysis of variance (ANOVA) as completely randomized block design using the GLM procedure of SAS version 9.2.Means were separated by Duncan multiple range test.Results: The weight gain, feed intake, feed conversion ratio were evaluated during the periods from 7-14, 15-21 and 22-35 days.Carcass traits, non-carcass components and meat quality were evaluated on 35 days.The parameters of performance were not affected by the enzyme supplementation of diets fed to broiler chickens, except for feed conversion ratio which was higher (p<0.05) in group received 1 kg tG 1 on days 7-14 and 15-21 but not on days 22-25.Carcass and meat quality parameters were not affected by enzyme supplementation in the broiler diets, except for breast meat: Bone ratio and pH.Conclusion: Inclusion of Natuzyme Plus® up to 1 kg tG 1 in the diet of broiler chicken had no significant effect on performance, carcass quality or meat quality.