Isolation, determination of antigenic formula and antibiotic resistance genes of Salmonella bacteria isolated from pigs raising in Dak Lak province

Abstract

The study was conducted on 150 porcine feces samples collecting in Dak Lak province. The studied result showed that there were 16% positive samples (24 out of 150) with Salmonella spp., and several serotypes, such as: S. typhimurium, S. newsport, S. derby and S. rissen were identified. The tested result on antimicrobial susceptibility of the isolated Salmonella strains showed that all of the strains were susceptible to 7 out of 10 antibiotics. The isolated Salmonella strains were highly resistant to ampicillin (91.67%), tetracycline (91.67%) and streptomycin (87.5%). 58.33% of the isolated strains contained blaTEM genes and 70.83% strains contained tetA genes.