ANTIBIOTIC-RESISTANCE AND GENETIC PROPERTIES OF R-PLASMIDS IN SALMONELLA ISOLATES OF SWINE ORIGIN IN JAPAN
- 1 January 1980
- journal article
- research article
- Vol. 41 (1) , 46-50
Abstract
A total of 84 Salmonella isolates of 10 serovars from swine in Japan were tested for antibiotic susceptibility and detection of R plasmids. Of these, 58 (69.0%) were resistant to one or more antibiotic(s) such as tetracycline, streptomycin, sulfadimethoxine and chloramphenicol; and 38 (65.5%) of the 58 resistance isolates (mainly S. typhimurium isolates) had conjugative R plasmids. Among the 38 conjugative R plasmids, 36 thermosensitive R plasmids carrying tetracycline resistance were Fi- (no fertility inhibition) and belonged to incompatibility group Hl, whereas the R plasmids carrying streptomycin and sulfadimethoxine resistances coexisted in the same host, were Fi+ and were also compatible with the reference R plasmids tested. The epidemiologic significance of R plasmids derived from Salmonella isolates from swine is discussed.This publication has 7 references indexed in Scilit:
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