Desempenho de frangos de corte, digestibilidade de nutrientes e valores energéticos de rações formuladas com vários milhos, suplementadas com enzimas

摘要: Two assays were carried out to evaluate the broilers performance, nutrients digestibility and energy values of diets formulated with corn from different varieties (Experiment 1) regions 2), supplemented an enzymatic complex. In each assay, used 480 male Hubbard, 14 days old, grown 27 performance. The broiler chickens fed experimental in 6x2 factorial design (varieties x region), four replicates 10 unit. Each mixed a basal diet fixed amount 63.24%, constituting diets. crude protein changed according composition. Chromic oxide (0.5%) was as indicator. During 23rd 27th days, excretas collected and, 28th day, all replicate slaughtered digesta present last 30 cm terminal ileum, anterior ileo-cecal junction, collected. samples excreta ileal analyzed for dry matter, nitrogen, gross starch, coefficients values, calculated using indigestibility factor chromic oxide. It concluded that origen or regions) effected performance; nutrient type showed difference function chemical protein, starch improved enzymes.