Desempenho e rendimento de carcaça de codornas de corte originárias de diferentes incubatórios criadas no Semiárido Paraibano.

Abstract

The coturnicultura is an activity in expansion in Brazil, however, for its full success is needed in addition to meeting nutritional requirements and proper management, the adoption of an appropriate and effective breeding program, aiming to avoid inbred crossings and ease the shortage of materials genetic quality in Brazilian soil. Thus the aim of this study was to evaluate the performance and carcass yield of European quails of both sexes and two lines created in Paraiba semi-arid. For the study, 280 quails, with a day of life, created for two phases (1-21, 22-42 days old). Measurements of growth performance (feed intake, weight gain and feed conversion) were performed through weekly weighing, since the carcass yield and noble parts (chest and legs) were performed at 42 days of age, after completion of the final phase. The diets used in this experiment were formulated to be isonitrogenous, isocaloric and isonutritives for the two phases (initial and growth). The experimental design was completely randomized in a factorial 2 x 2 with two sexes and two strains, with 7 replications and 10 birds per unit totaling 28 experimental plots. For the initial phase of creation, there were significant interactions (P <0.05) for the RC and AC variables, where L1 males were better at both. For the GP, the L2 strain was higher. In the growth stage, no significant interaction for any variable. In total creation phase, there was no interaction for any variable, however, was no effect for CR in the factors sex and lineage, where L1 males performed better. For GP was no effect to the line factor, where L2 were superior. For CA, was no effect for sex factor, where males had higher averages. For carcass yield at 42 days of age, there was a significant interaction only for breast yield, where L2 males showed better results. For other income variables, only, there was a significant difference to the factors sex and lines for live weight, where females and lineage 2 showed higher weights for male lineage 1. Therefore, we recommend the use of quail male, regardless of lineage, as presented better carcass yield.