Effect of the duration of pre-slaughter feed withdrawal on body weight of broilers chickens at 45 days of age

Abstract

Were used 240 broilers Ross of both sexes created separately, with objective to measure the loss of corporal weight in broilers in the pre-slaughter in 12 periods of withdrawal with interval of 1 hour between the periods. The birds were distributed in experimental desing completely randomized with a 2 x 12 x 10 factorial (sexes x treatments x repetitions). We chose 10 birds of each sex for each treatment between a minimum weight and a maximum weight. For the males it was certain 3.000 ± 100 grams and for the females 2.400 ± 100 grams. The analysis of the loss of corporal weight demonstrated that there was significant difference (P <0,05) among the treatments, and, when increasing the time of withdrawal, it also increased the weight loss, being that larger percentage for the males when compared with the females.