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Войти в исследования American journal of veterinary research · 2026
Whole-genome sequencing reveals diverse antimicrobial resistance genes in Escherichia coli from pig slaughterhouses in Banten Province, Indonesia.
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Latif Hadri, Iryawati Dinda, Basri Chaerul, Pazra Debby Fadhilah, Rahayu Puji
Аннотация
OBJECTIVE: To characterize the distribution and genetic location of antimicrobial resistance genes (ARGs) in Escherichia coli isolated from pig slaughterhouses in Banten Province, Indonesia.
METHODS: 20 E coli isolates were collected from effluent and floor swabs in 10 slaughterhouses. Whole-genome sequencing was performed using Oxford Nanopore technology. Antimicrobial resistance genes were identified using AMRFinderPlus, and plasmid replicons were detected with PlasmidFinder.
RESULTS: ARGs representing 12 antibiotic classes were detected, including aminoglycosides, β-lactamases, colistin, fosfomycin, macrolides, phenicols, quinolones, sulfonamides, tetracyclines, and trimethoprim. Floor isolates carried 28 ARGs, whereas effluent isolates carried 23. β-Lactamase genes showed the greatest diversity (11 types), dominated by blaEC. Many ARGs were plasmid-borne, and 65% of isolates exhibited multidrug resistance potential.
CONCLUSIONS: Pig slaughterhouse E coli harbor diverse, plasmid-associated ARGs, indicating active dissemination potential and emphasizing the importance of genomic surveillance.
CLINICAL RELEVANCE: Although this study did not involve clinical patients, the findings are highly relevant to veterinary and public health practice. The detection of diverse, plasmid-associated ARGs in slaughterhouse E coli highlights the need for antimicrobial stewardship and biosecurity measures in pig production systems to mitigate transmission risks to animals, workers, and consumers.
METHODS: 20 E coli isolates were collected from effluent and floor swabs in 10 slaughterhouses. Whole-genome sequencing was performed using Oxford Nanopore technology. Antimicrobial resistance genes were identified using AMRFinderPlus, and plasmid replicons were detected with PlasmidFinder.
RESULTS: ARGs representing 12 antibiotic classes were detected, including aminoglycosides, β-lactamases, colistin, fosfomycin, macrolides, phenicols, quinolones, sulfonamides, tetracyclines, and trimethoprim. Floor isolates carried 28 ARGs, whereas effluent isolates carried 23. β-Lactamase genes showed the greatest diversity (11 types), dominated by blaEC. Many ARGs were plasmid-borne, and 65% of isolates exhibited multidrug resistance potential.
CONCLUSIONS: Pig slaughterhouse E coli harbor diverse, plasmid-associated ARGs, indicating active dissemination potential and emphasizing the importance of genomic surveillance.
CLINICAL RELEVANCE: Although this study did not involve clinical patients, the findings are highly relevant to veterinary and public health practice. The detection of diverse, plasmid-associated ARGs in slaughterhouse E coli highlights the need for antimicrobial stewardship and biosecurity measures in pig production systems to mitigate transmission risks to animals, workers, and consumers.