DESEMPENHO DE FRANGOS DE CORTE ALIMENTADOS COM DIETAS CONTENDO FARINHA DE PENAS NO PERÍODO DE 21 A 42 DIAS

Abstract

This current paper aimed to evaluate the use of increasing levels of hydrolyzed feather meal (0, 2, 4, 6, 8%), feeding broiler females 21 to 42 days old. Cobb 480 pullets were used with 21 days of age an average weight of 938 grams, distributed in 30 experimental plots in a randomized block design with five treatments and six replicates of 16 birds each. Five experimental diets isonitrogenous and isoenergetic based on digestible amino acids for stages 21 to 35 days and 36 to 42 days. The birds were weighed for uniformity of the plots at 21 days and every seven days to assess the weight and feed consumption. The average values for weight gain, feed consumption and feed conversion, respectively, 1.398 ± 59 g, 3.068 ± 130 g and 2.194 ± 0.36. The average weights of carcass, breast, thigh, drumsticks, abdominal fat, heart, liver and gizzard were, respectively, 1671 ± 81 g, 569 ± 38 g, 218 ± 13 g, 275 ± 13 g, 49.3 ± 7 g, 9.7 ± 1 g, 36.8 and 27.2 ± 2 g. The conclusion was that for each 1% inclusion of FPH was observed a decrease in carcass weight of 16.6 g in weight of the wings of 1.26 g and 1.73 g increase in abdominal fat.