Complexos enzimáticos em rações para frangos de corte
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Data
2016-03-17
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Universidade Federal de Goiás
Resumo
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.
Descrição
Palavras-chave
Aditivos , Desempenho , Fitase , Protease , Carboidrases , Additives , Performance , Phytase , Protease , Carbohydrases
Citação
SANTOS NETO, L. D. Complexos enzimáticos em rações para frangos de corte. 2016. 74 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Goiás, Goiânia, 2016.