Characterization of antimicrobial resistance in Salmonella enterica strains isolated from Brazilian poultry production

Antimicrobial resistance profiles and presence of resistance determinants and integrons were evaluated in Salmonellaenterica strains from Brazilian poultry. The analysis of 203 isolates showed that those from the poultry environment (88 isolates) were significantly more resistant to antimicrobials than isolates from other sources, particularly those isolated from poultry by-product meal (106 isolates). Thirty-seven isolates were resistant to at least three antimicrobial classes.