Resistance to antimicrobial agents and prevalence of R plasmids in Pasteurella multocida from turkeys

D. C. Hirsh, L. M. Hansen, L. C. Dorfman, K. P. Snipes, Tim Carpenter, D. W. Hird, R. H. McCapes

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Abstract

One hundred fifty-three isolates of Pasteurella multocida, representing the causative agent of 95% of all known outbreaks of fowl cholera occurring in California meat and breeder turkeys from August 1985 through February 1987, were examined for susceptibility to antimicrobial agents. Of the 153 isolates, 6 were shown to be resistant to one or more antimicrobial agents. Of the six resistant isolates, five contained R plasmids. All but one of the R plasmids were small (6 to 7 megadaltons) and nonconjugative, encoding resistance to tetracycline or kanamycin, streptomycin, and sulfonamides; the other was large (70 megadaltons) and conjugative, transferring resistance to kanamycin, streptomycin, sulfonamides, and tetracycline to P. multocida and Escherichia coli. The three plasmids encoding resistance to tetracycline alone appeared identical.

Original languageEnglish (US)
Pages (from-to)670-673
Number of pages4
JournalAntimicrobial Agents and Chemotherapy
Volume33
Issue number5
StatePublished - 1989

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ASJC Scopus subject areas

  • Pharmacology (medical)

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Hirsh, D. C., Hansen, L. M., Dorfman, L. C., Snipes, K. P., Carpenter, T., Hird, D. W., & McCapes, R. H. (1989). Resistance to antimicrobial agents and prevalence of R plasmids in Pasteurella multocida from turkeys. Antimicrobial Agents and Chemotherapy, 33(5), 670-673.