Evaluation of the antimicrobial and intestinal integrity properties of boric acid in broiler chickens infected with Salmonella enteritidis: Proof of concept
Boric acid significantly reduces Salmonella Enteritidis colonization in crop and ceca.
0.1% boric acid in feed not affects total aerobic or lactic acid bacterial in ceca.
Boric acid reduces gut leakage of FITC-d, intestinal inflammation and intestinal IgA.
The objectives of the present study were to evaluate the antimicrobial effect of boric acid (BA) on Salmonella enteritidis colonization, intestinal permeability, total intestinal IgA levels, and cecal microbiota composition in broiler chickens. For this purpose, sixty day-old-chicks were randomly allocated to one of two groups: 1) non-treated control group and 2) 0.1% (w/w) BA in feed. All chicks were challenged with 10 4 cfu of S. Enteritidis per bird at 1-d old. On day 3 and 10 post-challenge, samples of crop and ceca-cecal tonsils (CCT) were aseptically collected to evaluate overall aerobic and lactic acid bacteria, as well as S. Enteritidis recovery. Blood and intestinal samples were also collected to evaluate intestinal permeability and total intestinal IgA production, respectively. On day 10 post-challenge, the concentration of S. Enteritidis in crop and CCT significantly decreased (P
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