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Related Experiment Video

Updated: May 6, 2026

Prevention of Heat Stress Adverse Effects in Rats by Bacillus subtilis Strain
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Bacillus subtilis improves antioxidant capacity and optimizes inflammatory state in broilers.

Yu Zhang1,2, Junyan Zhou1, Linbao Ji2

  • 1Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China.

Animal Bioscience
|February 29, 2024
PubMed
Summary
This summary is machine-generated.

Bacillus subtilis supplementation improved antioxidant capacity and immune response in broiler chickens. This probiotic enhanced liver function and modulated serum cytokines, offering a potential alternative to antibiotic growth promoters.

Keywords:
AntioxidantBacillus subtilisBroiler ChickenInflammatoryMeat Quality

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Area of Science:

  • Animal Science
  • Microbiology
  • Immunology

Background:

  • Bacillus subtilis is a probiotic known for antibacterial properties in poultry.
  • Emerging evidence suggests Bacillus subtilis possesses antioxidant and immune-modulating capabilities.
  • Understanding its role in broiler production is crucial for optimizing animal health and performance.

Purpose of the Study:

  • To investigate the effects of Bacillus subtilis supplementation on the production of broiler chickens.
  • To evaluate the impact of Bacillus subtilis on antioxidant status and immune response in broilers.
  • To compare the efficacy of Bacillus subtilis with antibiotic growth promoters (AGP).

Main Methods:

  • 324 Arbor Acres broilers were divided into three groups: control, antibiotic growth promoter, and Bacillus subtilis.
  • The experiment duration was 42 days, with dietary supplementation of Bacillus subtilis at 0.5%.
  • Muscle, serum, and liver samples were collected for biochemical and molecular analyses.

Main Results:

  • Bacillus subtilis reduced serum and liver malondialdehyde levels and increased liver superoxide dismutase activity.
  • Supplementation with Bacillus subtilis modulated serum cytokines, increasing IL-10 and decreasing TNF-α and IL-1β compared to AGP.
  • Bacillus subtilis improved breast muscle color (a* value) post-slaughter but did not affect meat quality parameters like weight, shear force, or losses.

Conclusions:

  • Dietary Bacillus subtilis enhances the antioxidant capacity of broiler chickens.
  • Bacillus subtilis optimizes the immune response in broilers, offering a beneficial alternative to AGP.
  • The findings support the use of Bacillus subtilis for improving broiler health and potentially meat quality.