COMPARATIVE EFFECTS OF DIFFERENT DIETARY CONCENTRATIONS OF beta-GALACTO-OLIGOSACCHARIDES ON SERUM BIOCHEMICAL METABOLITES, SELECTED CAECEL MICROBIOTA AND IMMUNE RESPONSE IN BROILERS
JOURNAL OF ANIMAL AND PLANT SCIENCES(2017)
Abstract
A total of, 200, day old Hubbard broiler chicks, were randomly divided into four treatment groups (n = 50) with five replicates (n = 10) in each group and allotted four treatments. Birds in the control group (beta-GOS-0) were given a corn based diet, whereas, birds in other three experimental groups were given same diets supplemented with different concentrations of beta-GOS i. e., 0.1% (beta-GOS-1), 0.2% (beta-GOS-2) and 0.5% (beta-GOS-5) for a period of 35 days. The birds were vaccinated against the Newcastle disease virus. Moreover, birds were also sensitized against 2, 4dinitrochlorobenzene for determination of cell mediated immunity. At the end of experiment, ten birds from each group were slaughtered to collect blood for serum biochemical metabolites and humoral immunity determination and caecal digesta for selected caecal microbiota enumeration. Data were analyzed using one-way ANOVA. In case of significant F-value (P < 0.05), Tukey's post hoc test was applied. Results demonstrated that cell mediated immunity was higher (P < 0.05) in the beta-GOS-1 group. Concentrations of caecal Lactobacilli were higher in the beta-GOS-2 and beta-GOS-5 groups. The serum biochemical metabolites, humoral immunity and counts of Clostridia and coliforms were not affected by dietary supplementation of beta-GOS. In conclusion, dietary supplementation of beta-GOS conferred better effects in terms of increased caecal Lactobacillus counts and immuno-modulation in broilers.
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Key words
galacto-oligosaccharides,serum metabolites,cell mediated immunity,humoral immunity,caecal microbiota,broilers
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