Broiler breeders (Ross Line) were submitted to three different systems of feeding intervals namely: T1= 48/48h, T2 = scheme 5/2 and T3 = 48/57/63h. The study 1 was during the growing period from the fifth to the twentieth week. The variables studied in this assay were: body weight, uniformity, viability, weight gain and feed conversion. In the study 2, which as developed from the 29th to 44th week of age, the residual effect of the assay 1 was evaluated in regard to the productivity parameters. The variables mensured were egg production, egg weight, hatchability percentage and feed conversion per eggdozen. Data collected were subjected to analyses of variance and the differences were compared by the Tukey test. In the study 1 the increasing feed intervals resulted in better body weight uniformity as well as better feeding conversion (P<0.05). The feed consumption was pre-established and it was not statistically analyzed. The production viability did not show significant differences (P>0.05). The results were lower in the parameters of weight of gain and feed conversion for the birds that had received the smaller feed interval (P<0.05). In the second study (production period), the treatments did not show differences relating to the parameters studied (P>0.05), the production data shoved hight similarity in the different treatments.
broiler breeders; feeding programs; uniformity; viability
