Programas de alimentação para codornas japonesas em crescimento e seus efeitos na fase produtiva

Abstract

The experiment was carried out to evaluate differents feeding programs for Japanese quails on the performance at the end of the growth phase and the impacts on production phase. Was used 432 birds were distributed in four treatments with six replicates, with 18 birds each. Four feeding programs were used, in program P1, rations were formulated for 1 to 21 days of age and in P2 for 21 to 42 days of age. Rations from P1 and P2 program were formulated based on recommendations for total and digestible amino acids. In P3 and P4 programs, rations for phase from 1 to 42 days were compiled by the nutritional recommendations of the Nutrient Requirements of Poultry (NRC), whereas in P4, threonine requirement was reduced. With 42 days of age, after the evaluation of performance, the birds were transferred to a production hall, keeping the same experimental design. In the production phase, the birds were evaluated for 84 days, and all received the same ration, formulated according to the NRC (1994). In the phase from 1 to 21 age days, smaller consumption was observed for the birds submitted to P3 and P4 regarding the fed with P1 and P2, however, there was no significant difference for the weight and conversion gain feed. Already for the phase from 22 to 42 age days, P1 and P2 provided ration smaller consumption. That reflected in the results obtained for the total period, since there was no significant difference between treatments. That P3 was observed increased the age for the production of the first egg. In the that tolls to the performance and to the eggs quality, P1 provided prejudiced result for conversion feed by dozen of eggs, among supplied programs, while P2 provided values elevated most of Units Haugh, when compared to the programs P1 and P4, and best results for specific gravity of the eggs regarding P1 and P3. The economic evaluation showed that for the phase from 1 to 21 age days, the programs P3 and P4 were the best, while in the phase from 22 to 42 age days, the programs P1 and P2 provided more satisfactory results, and in the total period there was not statistical difference for these parameters. Thus, the program using digestible amino acid in the formulations (P2) is nominated for Japanese quails in growth.