ANTIMICROBIAL RESISTANCE PROFILE OF BACTERIAL ISOLATES FROM ANIMALS INTENDED FOR HUMAN CONSUMPTION

Due to the growing demand for food of animal origin, traditional production schemes have become obsolete, causing producers to look for new alternatives to increase productivity. Among the alternatives, the application of antibiotics in feed has become popular for improving animal performance, but this has led to the emergence of resistant microorganisms. Thus, the objective of this work was to evaluate the antimicrobial resistance profile of 37 pathogens isolated from swine and chickens intended for human consumption identified as Salmonella and E. coli to antibiotics used in human medicine through the disk diffusion technique; namely: amikacin 30 mu g, amoxicillin-clavulanic acid 30 mu g, ampicillin 10 mu g, azithromycin 15 mu g, cephalexin 30 mu g, colistin 10 mu g, ceftriaxone 30 mu g, ciprofloxacin 5 mu g, doxycycline 30 mu g, streptomycin 10 mu g, 10 mu g, gentamicin meropenem 10 mu g, norfloxacin 10 mu g, penicillin G 10 IU, trimethoprim-sulfamethoxazole 25 mu g, and vancomycin 30 mu g. Some antibiotics recurrently used to treat serious infections showed low efficacy against the analyzed isolates; Among these antibiotics with little efficiency, vancomycin and penicillin G stood out. Vancomycin had an inhibitory effect in only two isolates, one of which showed partial resistance to the antibiotic. Penicillin G showed a partial inhibitory effect in most of the isolates tested, and 13 isolates showed total resistance to the antibiotic. The results showed that most of the bacterial isolates tested showed total or partial resistance to almost all antibiotics. From the analysis of the results, it was possible to perceive that the bacteria present in the food production chain showed a high profile of antimicrobial resistance, a fact that can cause damage to the health of the consumer.