Investigacion de salmonelas en cabritos faenados

Abstract

A study was made on the prevalence of salmonella in freshly slaughtered young goats in a cold-storage plant in the province of San Luis, Argentina. The raising of this kind of livestock is an important economic activity in that area. Two hundred specimens of cecum contents were examined. Isolates were obtained only from specimens enriched in nutrient broth and screened in brillant green agar. Suspect colonies were purified by repeated isolation and screened by biochemical and serologic tests. Salmonellae were found in 6.5 per cent of the animals studied. S. oranienburg was the only serotype isolated. To determine their pathogenicity, strains were administered orally and by intravenous and intraperitoneal inoculation. Sensitivity to antibiotics was determined by the Kirby-Bauer method. The strains were sensitive to chloramphenicol, kanamycin, fosfomycin, ampicillin, robramycin, polymyxin B, nitrofurantoin, mezlocillin, piperacillin, cefalotin, cefotaxime, and a combination of sulfamethoxazole and trimethoprim, and exhibited resistance to sisomicin and sulfisoxazole