https://orcid.org/0000-0001-6820-4745
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ABSTRACT
Cloacal swab samples were collected from 350 apparently healthy commercial layers in Oyo and Osun states, Nigeria. Nine fluoroquinolone-resistant Salmonella species belonging to serovar Infantis (n=4), Heidelberg (n=3), and Saintpaul (n=2) were isolated from the sampled birds. The isolates were multidrug resistant with Multiple Antibiotic Resistance Index (MAR) ranging from 0.15 to 0.54. There was high resistance to fluoroquinolones, with 88.9% resistance to pefloxacin and ofloxacin, 77.8% to nalidixic acid and ciprofloxacin. None of the isolates were ESBL positive. All the nine isolates did not carry qnrA gene; 11.1%, 22.2% and 88.9% possessed qnrB, qnrD and qnrS, respectively. This study isolated plasmid mediated fluoroquinolone resistant rare Salmonella serovars from commercial layers in Nigeria.
Acknowledgments
The authors are grateful to the poultry farmers for allowing sample collection from their farms.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Author contributions
FOJ, AOO and ATPA contributed to the conception and design of the study. FOJ collected the data, carried out the laboratory analysis and prepared the draft manuscript. FOJ revised the manuscript and all authors approved the submission of the manuscript.