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Bacillus subtilis (DSM17299) significantly reduces Salmonella in broilers.

I Knap1, A B Kehlet, M Bennedsen

  • 1Chr. Hansen A/S, Boege Alle 10-12, 2970 Hoersholm, Denmark.

Poultry Science
|July 15, 2011
PubMed
Summary

Bacillus subtilis supplementation significantly reduced Salmonella shedding and colonization in broiler chickens. This probiotic intervention enhances food safety by lowering pathogen levels in poultry.

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Area of Science:

  • Animal Science
  • Microbiology
  • Food Safety

Background:

  • Salmonella is a significant zoonotic pathogen with poultry as a primary reservoir.
  • Previous studies show Bacillus subtilis reduces Salmonella shedding but not long-term colonization.

Purpose of the Study:

  • To evaluate the efficacy of Bacillus subtilis DSM17299 in a broiler chicken diet.
  • To assess its impact on Salmonella colonization and fecal shedding under production conditions.

Main Methods:

  • Broiler chickens were fed a diet supplemented with Bacillus subtilis DSM17299.
  • Salmonella colonization in the intestinal tract and fecal shedding were monitored.

Main Results:

  • A 58% reduction in Salmonella-positive drag swabs was observed in the probiotic-fed group compared to 100% in controls.

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  • Bacillus subtilis significantly reduced cecal Salmonella load by 3 log units.

    • Conclusions:

    • Dietary Bacillus subtilis DSM17299 effectively reduces Salmonella colonization and shedding in broiler chickens.
    • This probiotic intervention has implications for improving poultry live production and food safety.