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Related Experiment Videos

Bacillus subtilis strain specificity affects performance improvement in broilers.

L Rhayat1, V Jacquier1, K S Brinch2

  • 1Adisseo France SAS, Center of Expertise in Research and Nutrition, 6 Route Noire, Malicorne, 03600, FR.

Poultry Science
|April 6, 2017
PubMed
Summary
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A novel Bacillus subtilis strain significantly enhances broiler growth performance and feed conversion ratio. This new strain offers consistent improvements across various conditions, outperforming a commercial probiotic.

Area of Science:

  • Animal Science
  • Microbiology
  • Poultry Nutrition

Background:

  • Bacillus subtilis strains are used as direct-fed microbials (DFMs) in poultry.
  • Phylogenetic characterization is crucial for understanding microbial efficacy.
  • Optimizing broiler performance requires effective growth promoters.

Purpose of the Study:

  • To evaluate a new Bacillus subtilis strain for its effects on broiler performance.
  • To compare its efficacy against a commercial B. subtilis DFM.
  • To assess the strain's performance across diverse rearing conditions.

Main Methods:

  • Broiler growth trials were conducted under various conditions (different breeds, diets, litter types).
  • Birds were challenged with Clostridium perfringens in an initial experiment.
Keywords:
Bacillusbroilerperformanceprobioticspecificity

Related Experiment Videos

  • Bodyweight gain (BWG) and feed conversion ratio (FCR) were measured.
  • Performance was compared to unchallenged controls and a commercial B. subtilis DFM.

    • Main Results:

    • The new B. subtilis strain improved growth performance compared to challenged controls.
    • Across all trials, the new strain consistently improved FCR/BWG by an average of 3.2%.
    • The commercial B. subtilis strain showed less consistent results, improving performance by 2% in only one of three trials.

    Conclusions:

    • The novel Bacillus subtilis strain consistently enhances broiler performance.
    • This strain demonstrates superior and more reliable efficacy than a commercial B. subtilis DFM.
    • The findings support the use of this new strain as an effective DFM for broilers.