The effects and combinational effects of Bacillus subtilis and montmorillonite on the intestinal health status in laying hens

This study was conducted to evaluate the effects and combinational effects of Bacillus subtilis (BS) and montmorillonite (MMT) on laying performance, gut mucosal oxidation status, and intestinal immunological and physical barrier functions of laying hens. Three hundred sixty laying hens (29-week-old...

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Bibliographic Details
Published in:Poultry science 2020-03, Vol.99 (3), p.1311-1319
Main Authors: Chen, J F, Xu, M M, Kang, K L, Tang, S G, He, C Q, Qu, X Y, Guo, S C
Format: Article
Language:English
Subjects:
Bacillus subtilis
Immunology, Health and Disease
intestinal barrier
laying hen
montmorillonite
oxidation status
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Summary:This study was conducted to evaluate the effects and combinational effects of Bacillus subtilis (BS) and montmorillonite (MMT) on laying performance, gut mucosal oxidation status, and intestinal immunological and physical barrier functions of laying hens. Three hundred sixty laying hens (29-week-old) were randomly assigned to a 2 × 2 factorial arrangement of treatments (n = 6) for 10 wk as follows: (1) basal diet; (2) the basal diet plus 5 × 10  cfu BS/kg; (3) the basal diet plus 0.5 g MMT/kg; and (4) the basal diet plus 5 × 10  cfu BS/kg and 0.5 g MMT/kg. Dietary supplementation with BS increased egg production and egg mass, the activities of catalase (CAT) and total superoxide dismutase in the intestinal mucosa, and villus height and villus height-to-crypt depth ratio of the jejunum (P 
ISSN:0032-5791
1525-3171
DOI:10.1016/j.psj.2019.11.016