Effect of Dietary Inclusion of Probiotic, Prebiotic and Butyric Acid Glycerides on Resistance against Coccidiosis in Broiler Chickens
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概要
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This research was conducted to investigate the effects of single or combined use of probiotic (Primalac), prebiotic (Fermacto) and butyric acid glycerides (Baby C4) compared to salinomycin on resistance against coccidiosis in broiler chickens challenged with <I>Eimeria</I>. One day-old male Ross 308 broiler chicks were divided into 9 cages with 15 birds per each. Birds of different treatments received a regular corn-soybean meal basal diet supplemented with feed additives; none of them in negative control (C<SUP>-</SUP>), salinomycin in positive control (C<SUP>+</SUP>), probiotic in PRO group, prebiotic in PRE group, butyric acid glycerides in BAG group, probiotic+prebiotic in PRO+PRE group, probiotic+butyric acid glycerides in PRO+BAG group, prebiotic+butyric acid glycerides in PRE+BAG group, and probiotic+prebiotic+butyric acid glycerides in PRO+PRE+BAG group. At 28 d of age, 8 birds from each treatment were removed and kept separately in other cages (2 birds/cage) to challenge with <I>Eimeria</I>. These separated chicks were orally challenged with 1×10<SUP>5</SUP> <I>E. acervulina </I>and 9×10<SUP>4</SUP> <I>E. tenella</I>. Positive effect (<I>P</I><0.05) was observed in the duodenal and cecal lesion scores in any of the supplemented groups when compared to that of the C<SUP>-</SUP>. There was no significant difference between all supplemented groups and C<SUP>+</SUP> for cecal lesion score. PRO, PRE+BAG, PRO+PRE, PRO+BAG and PRO+PRE+BAG reduced (<I>P</I><0.05) oocyst shedding in birds challenged with <I>Eimeria </I>oocysts compared to the C<SUP>-</SUP>, and there was no significant difference between PRO+PRE, PRO+BAG, PRO+PRE+BAG and C<SUP>+</SUP>. These results demonstrate that prebiotic, butyric acid glycerides and especially probiotic or its combination with prebiotic or butyric acid glycerides enhance the resistance of birds and partially protects against coccidiosis. Therefore, it seems some of these supplements, in comparison to salinomycin, can diminish partially the adverse effects of coccidiosis.
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