title: Antimicrobial resistance in enterococci isolated from Turkey flocks fed virginiamycin.
abstract: From 125 separate cloacal cultures from three turkey flocks fed virginiamycin, 104 Enterococcus faecium and 186 Enterococcus faecalis isolates were obtained. As the turkeys aged, there was a higher percentage of quinupristin-dalfopristin-resistant E. faecium isolates, with isolates from the oldest flock being 100% resistant. There were no vancomycin-resistant enterococci. Results of pulsed-field gel electrophoresis (PFGE) indicated there were 11 PFGE types of E. faecalis and 7 PFGE types of E. faecium that were in more than one group of flock cultures.
authors.affiliation: Department of Medicine, William Beaumont Hospital, Royal Oak, Michigan 48073, USA.
authors.forename: L A
authors.initials: LA
authors.lastname: Welton
authors.forename: L A
authors.initials: LA
authors.lastname: Thal
authors.forename: M B
authors.initials: MB
authors.lastname: Perri
authors.forename: S
authors.initials: S
authors.lastname: Donabedian
authors.forename: J
authors.initials: J
authors.lastname: McMahon
authors.forename: J W
authors.initials: JW
authors.lastname: Chow
authors.forename: M J
authors.initials: MJ
authors.lastname: Zervos
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D013293:Enterococcus faecalis / Q000187:drug effects* / Q000302:isolation & purification; D016984:Enterococcus faecium / Q000187:drug effects* / Q000302:isolation & purification; D016908:Gram-Positive Bacterial Infections / Q000378:metabolism; D014422:Turkeys; D014769:Virginiamycin / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D014769:Virginiamycin; C062940:quinupristin-dalfopristin