Avaliação da inclusão de aditivo simbiótico em dietas de frangos
Nenhuma Miniatura disponível
Data
2022-03-05
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
This study aimed to assess the symbiotic inclusion (lysine, methionine, calcium, Saccharomyces cerevisiae, Bifidobacterium bifidum, Bacillus subtilis, Enterococcus faecium, Lactobacillus acidophilus, glucomannans, and mannooligosaccharides) in broilers diet and to evaluate the possible effects on the inclusion on zootechnic indexes, cuts and carcass yields, blood parameters, and broilers intestinal health. 512 animals were distributed in a completely randomized design, in of four treatments (Treatment 1 - Performance enhancer, Treatment. 2 - Symbiotic, Treatment 3 - Growth promoter + symbiotic, Treatment 4 - without addition of enhancer additive), eight replications consisting of 16 birds per experimental unit. During the experiment, zootechnic performances such as weight gain, feed consumption, feed conversion, and mortality were evaluated in each rearing phase (seven, 21, 35, and 42 days). Withing seven days, poultry fed with growth promoter and growth promoter + symbiotic exhibit higher final weight gain, weight gain, and feed consumption. At 21 days of age, there was higher weight gain and feed consumption with growth promoter and growth promoter + symbiotic. At 35 days of age, it was observed higher feed consumption with growth promoter and growth promoter + symbiotic. At 42 days of age, there were no statistic differences among the treatments for the performance variables. Significant differences were only found to leg quarter yield in poultry fed with symbiotic. On the 21st day, it was observed a higher concentration of Aspartate aminotransferase (AST), Alkaline phosphatase, and Triglyceride on the animal’s hematological profile that were fed with growth promoter and symbiotic. On the 42nd day, significant differences were observed regarding to uric acid to the poultry fed with growth promoter and symbiotic, which showed lower values to uric acid, broilers that received symbiotic + performance
enhancer and or no enhancer additive in the diet had higher serum calcium concentration. There was significative difference to the ileum crypt only on the 21st day of histomorphometry assessment the birds that received the symbiotic
Descrição
Palavras-chave
Citação
FARIA, I. S. Avaliação da inclusão de aditivo simbiótico em dietas de frangos. 2022. 54 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Goiás, Goiânia, 2022.