Isolamento e avaliação do perfil de resistência antimicrobiana de Salmonella spp. obtidas em carcaças de bovinos

Abstract

Bovine meet is a food widely consumed worldwide, and Brazil is one of the largest exporters, with an increasing participation in the international market. The growth in production consequently also increases the potential risk of food and water-borne diseases (FWBD) for consumers of these products. One of the main FWBD is salmonellosis, a illness caused by pathogenic strains of salmonella SPP., a gram-negative bacterium globally distributed that can cause abdominal discomfort, vomiting and diarrhea in humans and even more serious conditions. Salmonella is also a bacteria that can be multiresistant. This antimicrobial multidrug resistance is a global problem becoming increasingly worrying. The objective of this study was to investigate the presence and antimicrobial resistance profile of salmonella SPP in cattle slaughtered in the city of Uberlândia, state of Minas Gerais. Swab samples of bovine feces were collected from 8 different batches, 10 animals per batch (n=80). These samples were subjected to isolation and confirmation by PCR of the presence of salmonella SPP., and analysis of the profile of resistance to 16 antimicrobials. Between these samples, 2.5% (2/80) were positive for salmonella spp. being isolated one strain of each sample (s1 and s2). S1 was resistant to 4 antibiotics (cefuroxime, cefuroxin axethyl, amikacin and gentamicin) of 2 different classes (cephalosporin and aminoglycosides) and S2 was resistant to 5 different antibiotics (cefuroxime, cefuroxin axethyl, amikacin, gentamicin and tigecycline) of 3 classes (cephalosporin, aminoglycosides and glicilcyclins), the latter being considered multiresistant. We conclude that despite a low occurrence of positive samples for salmonella SPP., the two isolates had resistance and one of them was multidrug-resistant.