Utilização de antioxidante em dietas de matrizes de corte e desempenho de suas progênies

Abstract

The objective of this study was to evaluate the effect of a diet additive in different parameters in broiler production in the final phase, analyzing the use of a balanced diet has no effect on fertility, production late in the laying cycle and performance cuts of the progeny. The experiment was conducted at the poultry Set Agrotechnical "Visconde da Graça" - Federal Institute - South Rio Grande, Pelotas - RS. The trial period was from April to June 2012, corresponding to four cycles of 21 days each. The experiment included 451 matrices divided into two lots. The lineage of the arrays was the Cobb 500 FF. Fertility was assessed during the four cycles. We also analyzed the production late in the laying cycle and analysis of sections of the thigh and drumstick (Cxscx) and chest to evaluate the difference in progeny. On the first day of life of the matrix, they were divided into two lots. Each plot received a name and a type of food. The treatment without diet economasE received base, and treatment with base economasE received the feed with the antioxidant additive economasE ® (based on vitamin E, selenium, seaweed extract, and ascorbic acid). The two treatments consisted of diets based on corn and soybean meal, with the same composition, except for the inclusion of the antioxidant additive in the proportion of 20 grams per 100 pounds of feed, treatment with economasE. The results observed for production late in the laying cycle in this experiment showed significant differences, however, treatment with economasE had lower egg production during the period, compared to those without economesE. The results for percentage of fertile eggs showed no significant difference between treatments, as well as to cut yields of the progeny (thigh and drumstick and breast).