Application of probiosis to poultry
2005
Khan, S.H. | Ansari, F.A.,Karachi Univ. (Pakistan). Dept. ofMicrobiology
Probiotics for chickens are designed either to replace beneficialorganisms that are not present in the alimentary tract or to providethe chicken with the effects of beneficial bacteria. Salmonella typhicolonizes the intestinal tract of poultry and causes food-borneillness in humans. Reduction of S. typhi colonization in the intestinaltract of poultry reduces potential carcass contamination duringslaughter. The purpose of this study was to isolate, identify anddetermine the effect of avian-specific Lactobacillus acidophilus asprobiotic on the colonization, weight gain and disease resistance inchicken. Two groups, each containing five chicks, were designated as"probiotic" and "control" group. At placement, probiotic group chickswere orally administered with L. acidophilus for 2 weeks. As aresult, an increased weight gain of this group was observedcomparable to the control group. Competitive exclusion of intestinalmicroflora and resistance to Samonella typhi in L. acidophilus fedprobiotic group was also observed. Antibiotic resistance pattern ofthe crop isolated probiotic and other Lactobacillus strain wasdetermined. Production of antimicrobial substance by L. acidophiluswas tested against Gram-positive and Gram-negative bacteria.Antibacterial activity was found against S. aureus and M. luteus.These findings indicate that probiosis can be applied as analternative to antibiotic use and, for improving the productionefficiency in the poultry industry.
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