Efeito da enzima fitase nas rações de frangos de corte, durante as fases pré-inicial e inicial

Abstract

1.080 male broilers were used from 1 to 7 and 8 to 21 days of age to evaluate phytase diet supplementation in chicks performance. Two experimental rations were used each phase, whereas the first diet recommended by company broiler integrator (C-1) and the second suggested by furnished company enzyme (C-2). Treatments consisted in: T1 and T4 - ration without enzyme and T2 and T3 - ration with enzyme. A completely randomized design was used, in a 2 x 2 factorial model (two rations x two levels of enzyme) with nine replicates and 30 birds per unit. The enzyme was used in amount of 100 g/ton of ration. Statistically significant difference (P<0.01) was found between treatments to weight gain and feed:gain ratio to pre-starter and initial phases, where best results were obtained with C-1 with enzyme addition, showing the importance of phytase in broiler chicks rations as to birds performance.