Performance and intestinal characteristics of broiler chicken fed diet with glutamine in the diet without anticoccidials agents
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Data
2014-09
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Resumo
Five hundred commercial male Cobb broilers
were allotted in a randomized blocks design
with five treatments, four replicates and 25
chicks per experimental unit in order to evaluate
the effects of adding L-glutamine to the diet
with no anticoccidial agents and growth
promoters. Experimental diets contained
L-glutamine at different levels (0.0; 5.0; 10.0;
15.0 or 20.0g/kg), through the experimental
period. Experiment was conducted with broiler
chicken from 1 to 42 days old. The parameters
evaluated were feed intake, feed conversion
ratio, body weight gain, mortality, digestibility
coefficients of dry matter, crude protein and
ether extract, carcass yield and intestinal
mucosa structure of small intestine. The data
obtained were submitted to polynomial
regression analysis. Means were compared
using Tukey test.Was considered a type I error
set at P ≤ 0.05. The level of L-glutamine in the
diet influenced feed conversion ratio of broilers
at 1-7 days old, which was improved at
10.0g/kgL glutamine. Carcass yield and
digestibility coefficients of the diet were not
affected by the levels of glutamine in the diet.
Adding L-glutamine influenced crypt depth in
small intestine of broilers at 18 and 42 days old.
It is recommended the addition of 10.0g/kg
L-glutamine to the pre-started diet.
Descrição
Palavras-chave
Amino acids, Additives, Birds, Coccidiosis, Intestinal integrity, Aminoácidos, Aditivos, Aves, Coccidiose, Integridade intestinal
Citação
NASCIMENTO, Gisele Mendanha; LEANDRO, Nadja Susana Mogyca; CAFÉ, Marcos Barcellos; STRINGHINI, José Henrique; ANDRADE, Maria Auxiliadora; MARTINEZ, Karina Ludovico de Almeida; MELLO, Heloisa Helena de Carvalho; MASCARENHAS, Alessandra Gimenez. Performance and intestinal characteristics of broiler chicken fed diet with glutamine in the diet without anticoccidials agents. Revista Brasileira de Saúde e Produção Animal, Salvador, v. 15, n. 3, p. 637-648, July./Sept. 2014.