DESEMPENHO DE TRÊS LINHAGENS DE FRANGOS DE CORTE DE CRESCIMENTO RÁPIDO

This study aimed to evaluate the performance of three fast-growing broiler strains which currently represent the highest percentage of production on the market. We used a completely randomized design with six treatments in a 3 x 2 factorial design (strain x gender), with 12 repetitions per treatment. The treatments were divided into males of strain A, females of strain A, males of strain B, females of strain B, males of strain C and females of strain C. The performance variables that were analyzed were mean feed consumption (FC), live weight (LW), real feed conversion (FCr), traditional feed conversion (FCt) and viability (Viab.) at seven, 14 and 35 days of age. The results were submitted to variance analysis and Tukey’s test at 5% probability (SAS 9.2). There were no significant interactions between strain and sex for the performance variables at any age. There were no differences between strains in any variable analyzed performance at 35 days of age. However, as expected, analyses of variance showed sex effect on feed consumption, live weight, real feed and traditional feed, where the performance of males was higher than that of females. It was concluded that there are no differences in the performance between the current commercial strains evaluated, where the use of any can enable the same economic performance.