Antibiotic resistance of Staphylococcus hyicus subsp. hyicus strains isolated from pigs, cattle and chickens.

Abstract

A total of 212 strains of Staphylococcus hyicus subsp. hyicus isolated from pigs affected with exudative epidermitis and healthy pigs, cattle and chickens were tested for antibiotic susceptibility and detection of penicillinase. One hundred and five strains (49.5%) were resistant to one or more of the 21 antibiotics tested. Drug resistance was found in 92 (74.2%) of 124 swine strains, and 27.2% and 72.8% of the resistant strains were single and multiple drug resistant types, respectively. The most frequent patterns (80.6%) of the multiple drug resistance were PCG TC OL LCM KM, OL LCM, PCG TC and TC OL LCM. Of 34 bovine strains, 14.7% were resistant strains including 2 single and 3 multiple drug resistant types. Seven single and 1 multiple drug resistant types were also found in 14.8% of 54 chicken strains. Compared to the bovine and chicken strains, in consequence, the resistant strains were frequent among swine strains with a tendency toward multiple drug resistance. The penicillinase production was found only in 47 swine strains (37.9%).