What question did this study set out to answer?

This study aims to characterize the impacts of pre-harvest antibiotic use on antimicrobial resistance in Salmonella from poultry and swine farms.

Preharvest antibiotic use influences antibiotic resistance in Salmonella species from commercial poultry and swine farms in Lagos, Southwestern Nigeria

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Randomized trial evaluates antibiotic resistance in Salmonella species from farms, indicating public health risks.

This study aims to characterize the impacts of pre-harvest antibiotic use on antimicrobial resistance in Salmonella from poultry and swine farms.
Evaluated 3,600 fecal samples for Salmonella spp. and resistance determinants using microbiological protocols.
Assessed farm management practices and antibiotic use through structured questionnaires.
Correlated data on antibiotic use with AMR phenotypes in Salmonella strains.
Observed 1.5% prevalence of Salmonella spp. across sampled animals, with variations among species.
High rates of resistance to erythromycin (80–100%) and tetracycline (75–92.3%) identified.
Major resistance determinants detected included tetA (70–100%) and sul1 (65.4–80%).

Odey et al. (2026) studied this question.

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