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Selenium Enriched Bacillus Subtilis Yb-1114246 Improved Growth and Immunity of Broiler Chickens Through Modified Ileal Bacterial Composition
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Abstract
Background: Selenium-enriched Bacillus subtilis (SEBS) was made to add into the diets of broiler chickens to observe combined effects on the bacterial composition and immunity of ileum through its colonization on the site of intestinal mucous membrane to improve the body growth and immunity. Five hundred 1-d-old chickens were divided into five groups randomly: Control, inorganic Se, Bacillus subtilis (B. subtilis), SEBS, and antibiotic. The feed duration was 42 days (d). Growth performance was recorded and calculated. The strain of B. subtilis and SEBS colonizing in the gastrointestinal tract (GIT) were investigated using fluorescence in situ hybridization (FISH) assay and quantitative real-time polymerase chain reaction (qPCR). The V3-V4 hypervariable regions of the bacterial region of 16S rRNA gene were sequenced. Results: After 42 d of treatment, chicks feed SEBS or Bacillus subtilis had higher body weights than the control chicks or those given inorganic Se. SEBS colonized in distal segments of the ileum improved bacterial diversity, while reducing the number of endogenous pathogen and increasing the number of Lactobacillus sp. in ileal mucous membranes. Species of unclassified Lachnospiraceae, uncultured Anaerosporobacter, Peptococcus, Lactobacillus salivarius, and Ruminococcaceae_UCG-014, and unclassified Butyricicoccus in ileal mucous membranes played an important role in promoting immunity, such as tumor necrosis factor-α and interferon-β through spearman’s analysis. Dietary supplementary Se also improved bacterial composition of ileal mucous membranes. SEBS colonization in the ileal mucous membrane optimized bacterial composition, more enhanced the abundances of metabolic and immune genes on body growth and immunity. Conclusions: SEBS improved body growth performance and immunity of broiler chickens through colonization in the ileal mucous membrane and modified ileal bacterial composition.
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Title: Selenium Enriched Bacillus Subtilis Yb-1114246 Improved Growth and Immunity of Broiler Chickens Through Modified Ileal Bacterial Composition
Description:
Abstract
Background: Selenium-enriched Bacillus subtilis (SEBS) was made to add into the diets of broiler chickens to observe combined effects on the bacterial composition and immunity of ileum through its colonization on the site of intestinal mucous membrane to improve the body growth and immunity.
Five hundred 1-d-old chickens were divided into five groups randomly: Control, inorganic Se, Bacillus subtilis (B.
subtilis), SEBS, and antibiotic.
The feed duration was 42 days (d).
Growth performance was recorded and calculated.
The strain of B.
subtilis and SEBS colonizing in the gastrointestinal tract (GIT) were investigated using fluorescence in situ hybridization (FISH) assay and quantitative real-time polymerase chain reaction (qPCR).
The V3-V4 hypervariable regions of the bacterial region of 16S rRNA gene were sequenced.
Results: After 42 d of treatment, chicks feed SEBS or Bacillus subtilis had higher body weights than the control chicks or those given inorganic Se.
SEBS colonized in distal segments of the ileum improved bacterial diversity, while reducing the number of endogenous pathogen and increasing the number of Lactobacillus sp.
in ileal mucous membranes.
Species of unclassified Lachnospiraceae, uncultured Anaerosporobacter, Peptococcus, Lactobacillus salivarius, and Ruminococcaceae_UCG-014, and unclassified Butyricicoccus in ileal mucous membranes played an important role in promoting immunity, such as tumor necrosis factor-α and interferon-β through spearman’s analysis.
Dietary supplementary Se also improved bacterial composition of ileal mucous membranes.
SEBS colonization in the ileal mucous membrane optimized bacterial composition, more enhanced the abundances of metabolic and immune genes on body growth and immunity.
Conclusions: SEBS improved body growth performance and immunity of broiler chickens through colonization in the ileal mucous membrane and modified ileal bacterial composition.
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