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Changes in antimicrobial susceptibility in a population of Escherichia coli isolated from feedlot cattle administered ceftiofur crystalline-free acid
- Lowrance, T.C., Loneragan, G.H., Kunze, D.J., Platt, T.M., Ives, S.E., Scott, H.M., Norby, B., Echeverry, A., Brashears, M.M.
- American journal of veterinary research 2007 v.68 no.5 pp. 501-507
- beef cattle, feedlots, Escherichia coli, animal pathogenic bacteria, antibiotic resistance, ceftiofur, steers, dosage, frequency, cattle diseases, Escherichia infections, feces, minimum inhibitory concentration, antibiotics, strains, plate count, cross resistance, natural selection, multiple drug resistance