Prevalence and antimicrobial resistance of Salmonella isolated from raw milk samples collected from Kersa district, Jimma Zone, Southwest Ethiopia

Abstract

Salmonella sp. is one of the most commonly reported foods borne disease all over the world and developing countries at large. The cattle heath protection is the basic for production of microbiologically safe and sufficient milk and also preferable for consumption by human being. So that, antimicrobial resistant Salmonella were the big threat to public health concern. The increasing rate of antimicrobial resistance strains were main reason existing for aggravated bacterial disease. Thus, this study was done to indicate the frequency of antimicrobial resistance Salmonella isolates from rawcow's milk in individual farmers and dairy farms of Kersa district that is ready for consumption. A cross sectional study was conducted by collecting rawmilk samples from dairy farms and individual farmers. Isolation and identification was made by serological and different traditional biochemical tests methods. The prevalence of Salmonella spp. in raw milk of the study area was 20%. The isolated Salmonella spp. were resistant to at least two or more antimicrobials which used in this study. Among tested drugs Nalidixic acid (80%) was most highly resistant; however, most susceptible to Ciprofloxacin (95%). So, the study was aimed to determine prevalence of antimicrobial resistance bacteria and to make the concerned bodies to take corrective measure.