ArticleIrish veterinary journal2022
Antimicrobial resistance in Escherichia coli isolated from on-farm and conventional hatching broiler farms in Ireland.
Article in Irish veterinary journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 16 citations in OpenAlex.
- Patterns of antimicrobial resistance genes in pathogens across One Health sectors in Ireland: anMicrobiology spectrum · 2026Article
- Fluoroquinolone resistance in Escherichia coli in the broiler production chain: the role of parent stock and hatchery.Poultry science · 2026Article
- ESBL and carbapenemase-producing enteric pathogens in animal-origin foods: a one health perspective.Folia microbiologica · 2026Review
- Phenotypic and Genomic Profiling ofAntibiotics (Basel, Switzerland) · 2026Article
- Evidence for antimicrobial stewardship and reduced antimicrobial resistance in the Mid-West of Ireland, 2012 to 2023: findings from a One Health study.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025Article
- Extended period of selection for antimicrobial resistance due to recirculation of persistent antimicrobials in broilers.The Journal of antimicrobial chemotherapy · 2024Article
- Antimicrobial resistance containment in Africa: Moving beyond surveillance.Biosafety and health · 2024Review
- Prevalence and Transmission of Extended-Spectrum Cephalosporin (ESC) Resistance Genes inAntibiotics (Basel, Switzerland) · 2023Article
- Antimicrobial resistance profiles ofJAC-antimicrobial resistance · 2023Article
- Comparison of antimicrobial resistant Escherichia coli isolated from Irish commercial pig farms with and without zinc oxide and antimicrobial usage.Gut pathogens · 2023Article
- Characterization of cephalosporin and fluoroquinolone resistant Enterobacterales from Irish farm waste by whole genome sequencing.Frontiers in microbiology · 2023Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundOn-farm hatching (OH) systems are becoming more common in broiler production. Hatching conditions differ from conventional farms as OH chicks avoid exposure to handling, transport, post-hatch water and feed deprivation. In contrast, chicks in conventional hatching conditions (CH) are exposed to standard hatchery procedures and transported post hatching. The objectives of this pilot study were to investigate the prevalence and frequency of Escherichia coli resistant to antimicrobials, including presumptive ESBL/AmpC-producing E. coli, isolated from environmental and faecal samples from OH versus CH hatching systems, and to investigate the presence of ESBL/AmpC-producing encoding genes.
resultsEnvironmental samples were collected from one flock in 10 poultry farms (5 OH farms, 5 CH farms) on day 0 post disinfection of the facilities to assess hygiene standards. On D10 and D21 post egg/chick arrival onto the farm, samples of faeces, boot swabs and water drinker lines were collected. E. coli were isolated on MacConkey agar (MC) and MacConkey supplemented with cefotaxime (MC+). Few E. coli were detected on D0. However, on D10 and D21 E. coli isolates were recovered from faeces and boot swabs. Water samples had minimal contamination. In this study, 100% of cefotaxime resistant E. coli isolates (n=33) detected on selective media and 44% of E. coli isolates (84/192) detected on nonselective media were multidrug resistant (MDR). The antimicrobial resistance (AMR) genotype for the 15 ESBL/AmpC producing isolates was determined using multiplex PCR. Six of these were selected for Sanger sequencing of which two were positive for bla
conclusionsThere was no difference in E. coli isolation rates or prevalence of AMR found between the OH versus CH systems, suggesting that the OH system may not be an additional risk of resistant E. coli dissemination to broilers compared to the CH systems. The frequency of β-lactam resistant E. coli in boot swab and faeces samples across both OH (24/33 (73%)) and CH (9/33 (27%)) systems may indicate that hatcheries could be a reservoir and major contributor to the transmission of AMR bacteria to flocks after entry to the rearing farms.
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