Abstract
Objectives: To assess the within-farm dynamics of extended-spectrum b-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 were characterized by
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