<b>Zootechnical performance and carcass yield of broiler chichens suplemented with different adittives</b> - DOI: 10.4025/actascianimsci.v26i1.1897

Abstract

The objective of study was to evaluate the performance of broiler chickens, submitted to diets containing different additives. It was used 2160 birds distributed in a randomized completely experiment with 6 treatments (T) with 8 repetitions of 45 birds each: T1 without growth promoter, T2 e T3 with antimicrobials, T4, T5 e T6 with probiotics. In the experimental period was evaluated the feed consumption, body weight gain, food conversion and mortality and were calculated the carcass yield, cutting, visceras, factor and cost of production. Significant differences between the treatments were not observed to the majority of the treatments. The birds that received antimicrobial growth promoters showed a best feeding conversion in relation to the birds that received control and probiotic ration. The feeding conversion difference reflected in the production cost.