Protease em dietas contendo farinhas de origem animal para frangos de corte

• Autor(a) principal: Carvalho, Deborah Pereira
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/6221
• topic: Avicultura; Biometria órgãos; Enzima exógena; Nutrição; On the top; Penas; Vísceras; Biometrics organs; Entrails; Exogenous enzyme; Feathers; Nutrition; On the top; Poultry; CIENCIAS AGRARIAS::ZOOTECNIA

Research with use of exogenous enzymes in feed for broiler, has shown its advantages in improving the digestibility and nutrient availability for birds, resulting in better performance. The objective of this study was to evaluate the effect of adding "on the top" the enzyme protease 0.05% (Cybenza DP 100) in diets for broilers containing animal meal. Two experiments were conducted divided into 4 treatments each experiment. In both experiments were using the same treatments, the treatments offered were: T1 - corn-based feed and soybean meal, T2 - corn-based feed and soybean meal with addition of protease, T3 - based feed corn and soybean meal with addition of meat, feathers and viscera, T4 - corn-based feed and soybean meal with addition of meat, feathers and viscera, with the addition of protease. The "experiment 1" was carried out with 320 chicks Cobb500 strain of 1 to 21 days. The experimental design was completely randomized, divided into batteries, with 4 treatments and 8 repetitions each containing 10 broiler per cage. The variables analyzed were: digestibility and performance variables. The "Experiment 2" was carried out with 720 chicks Cobb500 strain of 1 to 42 days. The experimental design was completely randomized, divided into box with 4 treatments and 6 repetitions each containing 30 broiler per box. The analyzed variables were: performance and Biometry of the gastrointestinal tract organs and the intestines and bowel. In all treatments the data were subjected to analysis of variance, and means were compared by Tukey test at 5% significance. In the " experiment 1 " it was observed that supplementation of the enzyme protease improved the feed conversion only in the pre- initial stage , but proved advantageous to use also in the initial phase , because even with the reduction in nutrient levels the results did not differ . In the " second experiment " it was observed that the use of animal meal for broilers from 1 to 21 days of age proved advantageous , since treatments with animal meal in their composition showed better weight gain and lower feed intake . The protease enzyme supplementation improved viability.