Comparative analysis of bacteriological hazards and prevalence of Salmonella in poultry-meat retailed in wet- and super-markets in Dhaka city, Bangladesh

Abstract

Commercial poultry meat is a well-recognized food vehicle for Salmonellosis worldwide. This study intended to determine bacteriological hazards and the Salmonella prevalence in poultry meat sold in retail shops in Dhaka city, Bangladesh. A total of 52 poultry meat samples were tested for Salmonella prevalence and biological hazards. The safety status of wet markets and supermarkets was also determined using aerobic plate count (APC) and total coliform count (TCC). Presumptively identified Salmonella isolates were tested for the presence of the Salmonella-specific gene invA. Antibiotic susceptibility test of Salmonella isolates was done with ten antimicrobial agents using antibiotic disk diffusion assays. The poultry meat sample of the four wet markets contained significantly higher (P < 0.001) APC and TCC than three super shops. From the safety point of view, only 8.18% samples and 60% samples collected from retail markets and super shops, respectively, were within safety limit for consumption (χ2 = 15.784, P < 0.001). The overall Salmonella prevalence was 13.46%. All seven Salmonella isolates were resistant to erythromycin, ampicillin, cloxacillin, nitrofurantoin, and trimethoprim, and sensitive to levofloxacin. Among them, 14.18%, 28.57%, and 71.42% were resistant to cefotaxime, ciprofloxacin, and ceftriaxone, respectively. So, this study recommends proper sanitary and hygienic conditions, improved meat processing, and storage in chilled/frozen conditions to prevent Salmonella contamination in raw poultry meat.

Keywords

• Salmonella
• Poultry-meat
• Wet market
• Supermarket
• Biohazards
• Bangladesh