Dietas de frangos de corte com subprodutos de origem animal de suplementação de creatina

This is study aimed to evaluate the performance and carcass characteristics in broilers fed exclusively with vegetal products and with diets included animal by-products added or not with creatine. Animal byproducts and creatine were used from eight days of age. It was used 2160 oneday- old male chicks distributed in a completely randomized design with twelve treatments and six replications. The diets were formulated based on corn and soybean meal according to treatments: TMT A. corn + soybean meal (CSM); TMT B. (CSM) + creatine; TMT C. (CSM) + meat and bone meal (MBM); TMT D. (CSM) + MBM + creatine; TMT E. (CSM) + blood meal (BM); TMT F. (CSM) + BM + creatine; TMT G. (CSM) + feather meal (FM); TMT H. (CSM) + FM + creatine; TMT I. (CSM) + viscera meal (VM); TMT J. (CSM) + VM + creatine; TMT K. (CSM) + MBM + FM + VM + BM; TMT L. (CSM) + MBM + FM + VM + BM + creatine. Performance, feed intake, live weight, feed conversion and viability were obtained at seven, 14, 21, 35 and 42 days of age. At 42 days of age, four birds per treatment were selected to evaluate the carcass yield (CY), boned breast yield (BBY), deboned breast yield (DBY) and thigh + drumstick yield (TDY). At 14 days of age, the use of creatine increased the live weight in the treatments B and F. Live weight was estatistic bigger in treatments (K and L) with inclusion of all animal by-product meals, added or not with creatine, on broilers diet. At 42 days of age, 5% of BM inclusion (TMT E) compromised the weight, real feed conversion and the use of creatine seemed to affect the weight in the treatment H. Live weight and feed conversion were compromised in the treatments K and L. In the others treatments, the performance of broilers fed with diets included with animal by-product meals, added or not with creatine, had the same performance those fed exclusively with vegetal products. It is concluded that inclusion of MBM, VM and FM can be used individually without to compromise the performance and carcass yield of broilers. Creatine addition didn t influence the final performance on test diets.Mestre em Ciências VeterináriasO trabalho foi realizado objetivando-se avaliar o desempenho zootécnico e de carcaça de frangos de corte utilizando dietas com uso exclusivo de produtos de origem vegetal, dietas com inclusão de subprodutos de origem animal e a adição de creatina. Os subprodutos de origem animal e a adição de creatina se deu a partir dos 8 dias de idade. Foram utilizados 2160 pintos machos de um dia, distribuídos em um delineamento inteiramente casualizado com doze tratamentos e seis repetições. As rações foram formuladas e produzidas à base de milho e farelo de soja de acordo com os tratamentos: TMT A. milho + farelo de soja (M/SOJ); TMT B. (M/SOJ) + creatina; TMT C. (M/SOJ) + FCO; TMT D. (M/SOJ) + FCO + creatina; TMT E. (M/SOJ) + FS; TMT F. (M+SOJ) + FS + creatina; TMT G. (M+SOJ) + FP; TMT H. (M+SOJ) + FP + creatina; TMT I. (M/SOJ) + FV; TMT J. (M/SOJ) + FV + creatina; TMT K. (M/SOJ) + FCO + FP + FV + FS; TMT L. (M/SOJ) + FCO + FP + FV + FS + creatina. As variáveis de desempenho, consumo médio ração, peso vivo médio, conversão alimentar e viabilidade foram obtidos aos 7, 14, 21, 35 e 42 dias de idade. Ao final foram selecionadas quatro aves por parcela para avaliar o rendimento de carcaça (RC), peito com osso (PCO), peito sem osso (PSO) e coxas + sobrecoxa (CS). Os dados foram submetidos à análise de variância e as médias (P