Abstract
A total of 102 Escherichia coli O157:H7 colonies recovered from 11 cattle and 14 sheep were collected and tested for their antibiotic resistance profiles using a disc diffusion method, according to the Clinical and Laboratory Standards Institute. Four (36.36 %) of the 11 cattle E. coli O157:H7 isolates were resistant to cephalothin, one (9.09 %) isolate was resistant to streptomycin, and one (9.09 %) to nalidixic acid. Two (14.28 %) of the 14 sheep E. coli O157:H7 isolates were resistant to sulphamethoxazole, one (7.14 %) isolate was resistant to sulphonamide compounds, and one (7.14 %) to streptomycin. All cattle and sheep isolates were found to be susceptible to cephazolin, gentamicin, ciprofloxacin, imipenem, trimethoprim/ sulphamethoxazole, chloramphenicol, trimethoprim, and ceftiofur. Six cattle isolates were susceptible at a ratio of 54.54 %, and 11 (78.57 %) isolates from sheep were susceptible to all 20 antibiotics tested. As an overall result, 68 % of the E. coli O157:H7 isolates belonging to cattle and sheep were susceptible to all antibiotics tested. On the other hand, most of the E. coli O157:H7 isolates were intermediately resistant to streptomycin, cephalothin, sulphamethoxazole, ampicillin, and kanamycin.
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Part of this study concerning with cattle was supported by a grant of Ankara University, Biotechnology Institute Scientific Research Project (BIAP, 2001 K120-240) and the part concerned with sheep was supported by a grant of The Scientific and Technological Research Council of Turkey (TUBITAK–107 T612).
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Goncuoglu, M., Bilir Ormanci, F.S., Ayaz, N.D. et al. Antibiotic resistance of Escherichia coli O157:H7 isolated from cattle and sheep. Ann Microbiol 60, 489–494 (2010). https://doi.org/10.1007/s13213-010-0074-8
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DOI: https://doi.org/10.1007/s13213-010-0074-8