title: Multidrug resistance and ESBL-producing Salmonella spp. isolated from broiler processing plants.
abstract: The aim of this study was to investigate the occurrence of multidrug-resistant, extended spectrum beta-lactamase (ESBL) producing Salmonella spp. isolated from conveyor belts of broiler cutting rooms in Brazilian broiler processing plants. Ninety-eight strains of Salmonella spp. were analyzed. Multidrug resistance was determined by the disk diffusion test and the susceptibility of the isolated bacteria was evaluated against 18 antimicrobials from seven different classes. The double disk diffusion test was used to evaluate ESBL production. Of the 98 strains tested, 84 were multidrug resistant. The highest rates of resistance were against nalidixic acid (95%), tetracycline (91%), and the beta-lactams: ampicillin and cefachlor (45%), followed by streptomycin and gentamicin with 19% and 15% of strain resistance, respectively. By contrast, 97% of the strains were sensitive to chloramphenicol. 45% of the strains were positive for the presence of ESBL activity. In this study, high rates of multidrug resistance and ESBL production were observed in Salmonella spp.
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil. Electronic address: reziech@gmail.com.
authors.forename: Rosangela Estel
authors.initials: RE
authors.lastname: Ziech
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Camila
authors.initials: C
authors.lastname: Lampugnani
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Perin
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Mallu Jagnow
authors.initials: MJ
authors.lastname: Sereno
authors.affiliation: Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Ricardo Antônio Pilegi
authors.initials: RA
authors.lastname: Sfaciotte
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Cibeli
authors.initials: C
authors.lastname: Viana
authors.affiliation: Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Medicina Veterinária e Zootecnia de Botucatu, Distrito de Rubião Júnior s/n, Botucatu SP18618-000, Brazil.
authors.forename: Vanessa Mendonça
authors.initials: VM
authors.lastname: Soares
authors.affiliation: Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Medicina Veterinária e Zootecnia de Botucatu, Distrito de Rubião Júnior s/n, Botucatu SP18618-000, Brazil.
authors.forename: José Paes de Almeida Nogueira
authors.initials: JP
authors.lastname: Pinto
authors.affiliation: Programa de Pós-Graduação em Ciência Animal, Universidade Federal do Paraná (UFPR), Rua Pioneiro n° 2153, Bairro Jardim Dallas, Palotina, PR 85950-000, Brazil.
authors.forename: Luciano dos Santos
authors.initials: Ldos S
authors.lastname: Bersot
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001938:Brazil; D002645:Chickens; D052978:Disk Diffusion Antimicrobial Tests; D024901:Drug Resistance, Multiple, Bacterial; D004783:Environmental Microbiology; D005525:Food-Processing Industry; D012475:Salmonella / Q000187:drug effects* / Q000201:enzymology* / Q000302:isolation & purification; D001618:beta-Lactamases / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D001618:beta-Lactamases
keywords: Antimicrobial resistance; Food borne pathogens; Salmonella spp.