Angela B. Bosman

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OBJECTIVES To assess the within-farm dynamics of extended-spectrum β-lactamase (ESBL)/AmpC-producing Escherichia coli in veal calves. METHODS Three veal-calf fattening farms were screened. Faecal samples from all calves within a compartment (109-150 per farm) were taken upon arrival on the farm (T0) and after 3, 6, 8 and 10 weeks (T3-T10). ESBL/AmpC genes(More)
qnrB19 genes have been reported in Escherichia coli, Escherichia hermannii, Salmonella enterica, and Klebsiella spp., located on IncN, IncL/M (human isolates), and ColE-like (both human and chicken isolates) plasmids (2, 6, 8, 9, 11, 13, 14, 16). This study describes the characterization of the genetic environment of a plasmid-mediated qnrB19 gene(More)
Bovine viral diarrhoea virus (BVDV) has emerged as one of the economically important pathogens in cattle populations, with a worldwide distribution and causing a complex of disease syndromes. Two genotypes, BVDV 1 and 2, exist and are discriminated on the basis of the sequence of the 5′ non-coding region (5’ NCR) using real-time PCR. Real-time PCR is more(More)
The aim of this study was to determine the association between farm management factors, including antimicrobial drug usage, and resistance in commensal Escherichia coli isolates from the faeces of white veal calves. Ninety E. coli isolates from one pooled sample per farm (n = 48) were tested for their phenotypical resistance against amoxicillin,(More)
This study was performed to determine a sampling strategy to quantify the prevalence of antimicrobial resistance on veal calf farms, based on the variation in antimicrobial resistance within and between calves on five farms. Faecal samples from 50 healthy calves (10 calves/farm) were collected. From each individual sample and one pooled faecal sample per(More)
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