Antimicrobial Resistance in Salmonella spp. Isolated from Poultry Waste in Abidjan District, Côte d’ivoire

Abstract

Poor management of poultry waste can lead to major public health problems, particularly if this waste is contaminated by antibiotic-resistant pathogenic bacteria. The purpose of our study was to assess the potential risks associated with the presence of Salmonella in poultry waste. Thus, twenty-eight (28) samples of poultry manure from farm and 30 samples of poultry slaughterhouse waste were analyzed in accordance with ISO 6579 for the isolation of Salmonella. Among the 200 strains obtained after biochemical characterization, 150 were positive for the inva virulence gene. The antibiotics susceptibility evaluated by the disk diffusion method indicate that all the 150 Salmonella strains were resistant to at least one of the drugs tested in this study. The resistance rate ranged from 8.67 to 66.67% for betalactam, from 10 to 56.67% for fluoroquinolones and from 23.33 to 31.33% for Aminoglycosides. However, high resistance rates were detected for Ampicillin (66.67%), Ticarcillin (56.67%), Piperacillin (36.67%) and for Perfloxacin (56.67%). Moreover, multidrug resistance (MDR) including these three antibiotics families was also detected in 43.33% of the Salmonella tested isolates. These results show the need to set up a biological system for treating the poultry waste in order to promote the reduction of its negative effect on human and animal health.