Original scientific paper

Antibiogram of Enterobacteriaceae isolated from free-range chickens in Abeokuta, Nigeria.

Olufemi E. Ojo ; Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria
Olatunde G. Ogunyinka ; Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria
Michael Agbaje ; Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria
James O. Okuboye ; Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria
Olugbenga O. Kehinde ; Department of Veterinary Public Health and Reproduction, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria
Mufutau A. Oyekunle ; Department of Veterinary Microbiology and Parasitology, College of Veterinary Medicine, University of Agriculture Abeokuta, Abeokuta, Nigeria

Abstract

Antimicrobial resistance in bacteria from the family Enterobacteriaceae is an important indicator of the emergence of resistant bacterial strains in the community. This study investigated the antimicrobial susceptibility of commensal Enterobacteriaceae from free-range chickens to antimicrobial agents using the broth microdilution. In all, 184 isolates (including 104 Escherichia coli, 44 Klebsiella spp, 20 Salmonella spp. and 16 Enterobacter aerogenes) were resistant to ampicillin (89.7%), chloramphenicol (73.9%), ciprofloxacin (33.2%), enrofloxacin (60.3%), neomycin (70.7%), norfloxacin (45.7%), streptomycin (78.8%) and tetracycline (73.4%). Escherichia coli was resistant to ampicillin (92.3%), chloramphenicol (73.1%), ciprofloxacin (34.6%), enrofloxacin (61.5%), neomycin (76.9%), norfloxacin (46.2%), streptomycin (80.8%) and tetracycline (76.9%). The rate of resistance in Klebsiella spp. was ampicillin (90.9%), chloramphenicol (72.7%), ciprofloxacin (54.5%), enrofloxacin (90.9%), neomycin (63.6%), norfloxacin (63.6%), streptomycin (81.8%) and tetracycline (81.8%). Salmonella spp. showed resistance to ampicillin (80.0%), chloramphenicol (80.0%), enrofloxacin (20.0%), neomycin (80.0%), norfloxacin (20.0%), streptomycin (80.0%) and tetracycline (35.0%) but were completely susceptible to ciprofloxacin. Enterobacter aerogenes was resistant to ampicillin (81.3%), chloramphenicol (75.0%), ciprofloxacin (6.3%), enrofloxacin (18.8%), neomycin (37.5%), norfloxacin (25.0%), streptomycin (56.3%) and tetracycline (75.0%). Overall, 147 (79.9%) out of 184 isolates demonstrated multidrug resistance to at least three unrelated antimicrobial agents. The high rate of antimicrobial resistance in bacterial isolates from free-range birds may have major implications for human and animal health with adverse economic implications.

Keywords

multidrug resistance; commensal Enterobacteriaceae; free-range chickens

Hrčak ID:

93350

URI

https://hrcak.srce.hr/93350

Publication date:

5.12.2012.

Article data in other languages: croatian

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