Abstract
The antibiotic resistance profile of 17 poultry isolates of Salmonella was studied against 24 different antibiotics. 69–88% of the Salmonella isolates displayed a high level of resistance, particularly against penicillin, rifampicin, erythromycin, clarithromycin, clindamycin, sulphamethoxazole and vancomycin. In contrast, a relatively low or moderate level of resistance was observed against furazolidone, spectinomycin, ciprofloxacin, chloramphenicol, cefepime, carbenicillin, nalidixic acid, streptomycin, oxacillin and cephalothin (11–59%). Moreover, resistance to multiple antibiotics (2–5) was also observed among the Salmonella strains, and none of the isolates was found susceptible to all the antibiotics used. Similarity coefficient among Salmonella strains by RAPD-PCR analysis varied from 0.60 to 0.86, and all the salmonellae could be classified into seven groups on the basis of dendrogram analysis. Generally, a very high level of concordance between RAPD-PCR profile and antibiotic profile was not observed, which indicates that genes for antibiotic resistance may not always be present on genomic DNA rather may be plasmid-borne.
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Authors thank the Head, Department of Biotechnology, University of Jammu, Jammu, for providing all the necessary laboratory facilities.
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Thakur, Y.R., Bajaj, B.K. Antibiotic resistance and molecular characterization of poultry isolates of Salmonella by RAPD-PCR. World J Microbiol Biotechnol 22, 1177–1183 (2006). https://doi.org/10.1007/s11274-006-9159-8
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DOI: https://doi.org/10.1007/s11274-006-9159-8