ArticleJournal of animal science and biotechnology2025
Florfenicol-induced dysbiosis impairs intestinal homeostasis and host immune system in laying hens.
Article in Journal of animal science and biotechnology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The trial behind it
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Who cites it
5 citing papers in PubMed.
- Natural Products AgainstMicroorganisms · 2026Review
- Jejunum FABP6 expression and potential mechanism response to Salmonella Pullorum inoculation revealed by proteomic profiling and RT-PCR in Chinese Taihe black-bone silky fowls.Poultry science · 2026Article
- Damage and recovery of artificial diet rearing silkworms (Bombyx mori L.) exposed to high-concentration florfenicol as well as the dynamic changes of midgut flora after functional bacterium supplementation.BMC microbiology · 2026Article
- Article
- Effects of flammulina velutipes stipe wastes on egg performance, cecum microbiota, intestinal barrier and serum immune response of laying hens.BMC veterinary research · 2025Article
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
backgroundDespite growing concerns about the adverse effects of antibiotics in farm animals, there has been little investigation of the effects of florfenicol in laying hens. This study examined the effect of florfenicol on the intestinal homeostasis, immune system, and pathogen susceptibility of laying hens.
resultsThe oral administration of florfenicol at field-relevant levels for 5 d resulted in a decrease in the gut microbiota genera Lactobacillus, Bacillus, and Bacteroides, indicating the development of intestinal dysbiosis. The dysbiosis led to decreased mRNA levels of key regulators peroxisome proliferator-activated receptor gamma (PPAR-γ) and hypoxia-inducible factor-1α (HIF-1α), compromising intestinal hypoxia. Intestinal homeostasis was also disrupted, with decreased expression of Occludin and Mucin 2 (Muc2) genes combined with increased gut epithelial permeability. The breakdown in intestinal homeostasis and immune function provided a favorable environment for opportunistic bacteria like avian pathogenic Escherichia coli (APEC), culminating in systemic infection. Immunologically, florfenicol treatment resulted in increased proportion and absolute number of MRC1L-B
conclusionThe uncontrolled and widespread use of florfenicol can negatively affect intestinal health in chickens. Specifically, florfenicol was found to impair intestinal homeostasis and immune function in laying hens, including by reducing butyrate levels, thereby increasing their susceptibility to systemic APEC infection. The development of strategies for mitigating the adverse effects of florfenicol on gut health and pathogen susceptibility in laying hens is therefore essential.
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Registered trials
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