Complexos enzimáticos em rações para frangos de corte

• Autor(a) principal: Santos Neto, Lindolfo Dorcino dos
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000007mr3
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/6097
• topic: Aditivos; Desempenho; Fitase; Protease; Carboidrases; Additives; Performance; Phytase; Protease; Carbohydrases; CIENCIAS AGRARIAS::ZOOTECNIA

The objective of study was to evaluate the combination of different enzyme complexes on animal performance, digestibility nutrient based on corn and soybean meal and on the biochemical characteristics of these complexes. The first experiment was used randomized design with 7 treatments and 6 replicates, 30 birds per repetition, a total of 1,260 birds a day old. The treatments were treatment 1: Basal diet; Treatment 2: Basal diet with addition of complex A (phytase, protease, xylanase, beta-glucanase, cellulase, amylase, pectinase) + B complex (protease and cellulase); Treatment 3: Basal diet with addition of complex A + complex B + enzyme (α-galactosidase); Treatment 4: Basal diet with addition of complex A + α-galactosidase; Treatment 5: Basal diet with addition of complex C (xylanase, amylase, protease) + Phytase B and α-galactosidase; Treatment 6: Basal diet with addition of complex C + Phytase C + α-galactosidase; Treatment 7: Basal diet with addition of complex C + Phytase D + α-galactosidase. The performance characteristics and carcass yield and statistical analysis were evaluated with the R software using the Tukey test at 5% probability. The treatments 3 and 5 improvement in the average final weight, weight gain and feed conversion (p <0.05) at seven days of age and the average final weight and gain weight at 14 days of age. There were no significant differences (p> 0.05) in the other stages between the groups and the carcass yield and cuts made in two birds from each experimental unit at 42 days old.The second experiment used 112 birds with 25 days of age, being held the total collection of excreta from 28 to 32 days old. It used the same treatments in the first experiment. Nitrogen analysis was performed, ether extract, crude energy and dry matter. From these data was performed to analyze statistically the R software using the Tukey test at 5% probability. No significant differences were observed (p> 0.05) for the CMMS, CMN, EMAn, BN with the inclusion of enzyme complexes, as for CMEE significant differences (p <0.05), demonstrating the treatments 2 and 4 with greater efficiency in metabolizing ether extract. The third experiment analyzed the samples of each product used in In Vivo experiments were carried out a number of enzymatic assays. These data was performed to analyze statistically the R software using the Tukey test at 5% probability. There were statistically significant differences (p <0.05) for the total protein assay, reducing sugar and β-1,3-glucanase assays, xylanase, CMCase, FPase, amylase, pectinase, acid phosphatase and protease. The complexes A, B, C and the enzyme α – gal shown in most of these assays described the specific and higher enzymatic activity, these results that can be related to the performance results found in the 1 at 7 and 1 at 14 days.