title: Antimicrobial resistance in Campylobacter spp isolated from broiler flocks.
abstract: The aim of this study was to assess the antimicrobial susceptibility of 62 Campylobacter spp. strains obtained from broiler flocks using the agar diffusion method. The Campylobacter spp strains were isolated from 22 flocks aged between 3 and 5 weeks of life, isolated from cloacae swabs, stools and cecal droppings in the farm and from the carcass rinsing in the slaughterhouse. Campylobacter spp strains were tested on Mueller-Hilton (MH) agar (27 samples) and MH plus TTC agar (35 samples). The antimicrobial susceptibility test revealed a 62.5% resistance to at least one drug, especially to enrofloxacin (71%), neomycin (50%), lincomycin (50%), tetracycline (43%), penicillin (42%), ceftiofur (33%) amoxicillin (27%), spiramycin (20%), ampicillin (18%) and norfloxacin (14%), whereas a lower percentage of strains was resistant to erythromycin (10%) and doxycycline (10%). All strains were sensitive to gentamicin and lincomycin-spectinomycin and 80% of them to colistin. These results indicate that it is necessary to reduce the use of antimicrobials in veterinary and human medicine.
authors.affiliation: Programa de Pós Graduação em Ciências Veterinárias, Universidade Federal do Rio Grande do Sul , Porto Alegre, RS , Brasil.
authors.forename: Suzete Lora
authors.initials: SL
authors.lastname: Kuana
authors.forename: Luciana Ruschel
authors.initials: LR
authors.lastname: Dos Santos
authors.forename: Laura Beatriz
authors.initials: LB
authors.lastname: Rodrigues
authors.forename: Anderlise
authors.initials: A
authors.lastname: Borsoi
authors.forename: Hamilton Luis do Souza
authors.initials: HL
authors.lastname: Moraes
authors.forename: Carlos Tadeu Pippi
authors.initials: CT
authors.lastname: Salle
authors.forename: Vladimir Pinheiro
authors.initials: VP
authors.lastname: do Nascimento
keywords: Campylobacter spp; antimicrobial resistance; broiler flocks
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