Amoxicillin / Clavulanic Acid and Cefotaxime Resistance in Salmonella Minnesota and Salmonella Heidelberg from Broiler Chickens

Authors

  • Aquino MHC Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Ferreira KFS Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Machado SA Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Nascimento ER Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Pereira VLA Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Rodrigues DP Department of Bacteriology, Oswaldo Cruz Institute, Rio de Janeiro, RJ, Brazil
  • Rodrigues IBBE Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
  • Silva RL Department of Veterinary Collective Health and Public Health, Faculty of Veterinary, Fluminense Federal University, Niterói, RJ, Brazil
Abstract:

This study investigated the resistance of various Salmonella strains to beta-lactam antibiotics. Salmonella Minnesota (36 strains) and Salmonella Heidelberg (24 strains) were isolated from broiler chickens and carcasses by the Disk Diffusion Test and resistance genes blaCTX-M-8, blaACC-1 and blaCMY-2 were detected by PCR. Of the 60 strains tested, 80% were resistant to at least one antibiotic. Specifically, 66.7% were resistant to amoxicillin/clavulanic acid and 75% were resistant to cefotaxime. Among the amoxicillin/clavulanic acid resistant strains, the blaCMY-2 gene was detected in 40%, blaACC-1 in 37.5% and blaCTX-M-8 in 7.5%. Among the cefotaxime resistant strains, we detected the genes blaCTX-M-8 in 13.3%, blaACC-1 in 33.3%, and blaCMY-2 in 31.1%. The presence of cefotaxime- and amoxicillin/clavulanic acid-resistant Salmonella in poultry, and the prevalence of extended spectrum betalactamases and AmpC-betalactamases in these strains are of huge concern to public health and economy.

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Journal title

volume 5  issue 2

pages  123- 129

publication date 2017-10-01

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