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- Agga, Getahun E; Schmidt, John W.; Arthur, Terrance M.
- Applied and environmental microbiology 2016 v.82 no.24 pp. 7197-7204
- Escherichia coli; animal health; antibiotic resistance; beef cattle; cephalosporins; chlortetracycline; disease control; feedlots; feeds; long term effects; medicine; morbidity; tetracycline
- ... Concerns have been raised that in-feed chlortetracycline (CTC) may increase antimicrobial resistance (AMR), specifically tetracycline-resistant (TETr) Escherichia coli, and third-generation cephalosporin-resistant (3GCr) E. coli. We evaluated the impact of a 5-day in-feed CTC prophylaxis on animal health, TETr E. coli, and 3GCr E. coli. A "control group" of cattle (n = 150) that received no CTC, w ...
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