Utilização de aditivos alternativos na dieta de frangos de corte

Abstract

Alternative additives are products derived from substances extracted from nature. They have been used in veterinary medicine with the purpose of improving the performance and productive efficiency of animals, with the advantage of not leaving residues in final products. The importance of alternative additives is becoming more and more expressive, where more studies are needed to find new products to replace inorganic additives. In this way, the purpose of this study was to evaluate the effects of addition of propolis glycolic extract and Coconut oil as alternative additives in broiler diets, through the performance and organs biometry in their final stage of growth. The experimental design was completely randomized (DIC), where three isonutritive diets (treatments) were used: T1- control diet without any type of growth promoter and alternative additive in its composition, T2- Addition of 1% of the extract Glycol of propolis in the diet and T3 - Addition of 1% of coconut oil in the diet, distributed in 6 (six) repetitions each, totalizing 18 experimental units, where each Experimental Unit was constituted of 5 (five) broilers, making total of 90 (ninety) animals. There were significant differences (P <0.05) in daily feed intake, feed conversion, liver weight, proventriculus weight and duodenal weight. The best responses were obtained when alternative additives were used. Therefore, it is concluded that propolis glycolic extract and coconut oil are good alternatives additives to be included in broiler diets in finishing phase.