Diverse non-typhoidal Salmonella serovars with multi-drug resistance potentials isolated from chicken faeces in Ogun State, Nigeria

Abstract

This study was carried out in selected poultry farms to determine the prevalence, distribution and antimicrobial resistance patterns in Salmonella serovars in Ogun State, South-western Nigeria. A total of 200 faecal samples were aseptically collected from the four geographical zones of Ogun State, Nigeria. Seventy-eight Salmonella isolates spread across 39 serovars and representing a prevalence of 39% was recovered. Salmonella Urbana (n=7), Salmonella Kingston (n=6) and Salmonella Agama (n=5) serovars were more commonly isolated. Resistance was most common to ciprofloxacin (29.5%; n=23/78). Multi-drug resistance (MDR) was observed in 15.4% (n=12/78) of the isolates spread across 7 serovars: S. Kentucky, S. Telelkebir, S. Virchow, S. Blockley, S. Chomedey, S. Haifa, and S. Isangi. The study showed the diversity of Salmonella serovars and the increasing trend of antimicrobial resistance in poultry farms in Ogun State, Southwestern Nigeria.