ArticleAntibiotics (Basel, Switzerland)2025
The Prevalence of Antimicrobial Resistance Genes in the Environments of Small Ruminant Farms from Central Portugal.
Article in Antibiotics (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Antimicrobial-ResistantAntibiotics (Basel, Switzerland) · 2026Article
- Comprehensive Shotgun Metagenomic Profiling of Antibiotic Resistance Genes in Sheep and Goat Farming Environments.Antibiotics (Basel, Switzerland) · 2026Article
- Nanopore sequencing in suitcase lab enables improved detection ofFrontiers in microbiology · 2026Article
- Development of an HPLC method for the simultaneous determination of azithromycin, clarithromycin, and erythromycin in wastewater.RSC advances · 2025Article
- Effects of DifferentMicroorganisms · 2025Article
- High Prevalence of Antimicrobial Resistance Genes in Rabbit Farms from Sumy Region, Ukraine.Antibiotics (Basel, Switzerland) · 2025Article
- Article
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Authors and funding
12 authors.
Funding
Abstract
backgroundAntimicrobial resistance is a pressing global concern affecting both human and animal health, with environment playing a key role in the dissemination of resistance determinants. This study aimed to investigate the presence of antimicrobial resistance genes (ARGs) associated with tetracyclines, β-lactams, macrolides, and sulfonamides in environmental matrices collected from 65 sheep and goat farms in central Portugal.
methodsEnvironmental samples, including water, soil, pasture, and bedding, were analyzed through qPCR for the detection of clinically relevant ARGs.
resultsARGs were detected in 83% of the samples, with over half exhibiting genes from three or more antibiotic classes, suggesting potential multidrug resistance. β-lactamase genes were the most prevalent, followed by those conferring resistance to tetracycline and sulfonamide resistance, while macrolide resistance genes were least frequent. The distribution of ARGs varied by farm type, host species, and municipality.
conclusionsThese findings suggest that small ruminant farms serve as important reservoirs for ARGs. The results underscore the need for systematic surveillance and further research into the ecological and genetic factors driving ARG persistence and dissemination in extensive livestock systems, including proper waste management strategies to limit the spread and persistence of antibiotic resistance and mitigate broader public health risks.
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