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Bacillus subtilis improves antioxidant capacity and optimizes inflammatory state in broilers |
Yu Zhang1,2,a 
, Junyan Zhou1,a
, Linbao Ji2
, Lian Zhang2
, Liying Zhao1
, Yubing Guo1
, Haitao Wei1
, Lin Lu1,*
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1Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
2College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China |
Correspondence:
Lin Lu, Tel: +86-13911829843, Fax: +86-010-80799141, Email: lulin@bua.edu.cn
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Received: 27 August 2023 • Revised: 9 October 2023 • Accepted: 8 January 2024
aThese authors contributed equally to this work. |
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| Abstract |
Objective
Bacillus subtilis, a kind of probiotic with broad-spectrum antibacterial function, was commonly used in livestock and poultry production. Recent research suggested that Bacillus subtilis may have antioxidant properties and improve immune response. This study aimed to verify the probiotic function of Bacillus subtilis in the production of broiler chickens.
Methods
A total of 324 (1-day-old) Arbor Acres broilers were selected and randomly divided into three groups: basal diet group (Ctr Group), basal diet + antibiotic growth promoter group (Ctr + AGP) and basal diet + 0.5% Bacillus subtilis preparation group (Ctr + Bac). The experiment lasted for 42 days. Muscle, serum and liver samples were collected at 42 days for determination.
Results
The results showed that Bacillus subtilis could decrease malondialdehyde content in the serum and liver (p<0.05) and increase superoxide dismutase 1 mRNA expression (p<0.01) and total superoxide dismutase (p<0.05) in the liver. In addition, compared with AGP supplementation, Bacillus subtilis supplementation increased interleukin-10 (IL-10) and decreased tumor necrosis factor-α and IL-1β level in the serum (p<0.05). At 45 minutes after slaughter Ctr + Bac presented a higher a* value of breast muscle than Ctr Group (p<0.05), while significant change in leg muscle was not identified. Moreover, there was no difference in weight, shear force, cooking loss and drip loss of breast and leg muscle between treatments.
Conclusion
Our results demonstrate that Bacillus subtilis in diet can enhance antioxidant capacity and optimize immune response of broilers. |
| Keywords:
Antioxidant; Bacillus subtilis; Broiler Chicken; Inflammatory; Meat Quality |
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