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KMID : 0359319910310030279
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Korean Journal of Veterinary Research
1991 Volume.31 No. 3 p.279 ~ p.284
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Characteristics and isolation of Listeria spp from poultry meat , products and environmental specimens in chicken slaughterhouse
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Abstract
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To investigate the epidemiological aspects of listeriosis, serotypes of L monocytogenes and antimicrobial susceptibilities of Listeria spp isolateci from chicken carcases and chicken slaughter house environmental specimens were determined.
Of 28 L monocytogenes strains, 12 strains(42.9%) were serotype 4, and the remaining 16 strains were untypable.
Peak distributions of minimum inhibitory concentration(㎍/㎖) of the isolates were 0.78㎍/㎖ for ampicillin, 0.39㎍/㎖ for erythromycin and penicillin G, 1.56㎍/㎖ for tetracycline and 6. 25㎍/㎖ or 12.5㎍/㎖ for chloramphenicol, and 3.13㎍/㎖ to>100㎍/㎖ for kanamycin and neomycin.
Most of 214 isolates were sensitive to ampicillin and erythromycin, but 20.1∼78.0% of the strains were resistant to tetracycline, kanamycin, penicillin-G and neomycin. Single or double drug resistance were observed in 75.8% of the resistant strains. The most common resistance patterns were Nm P-G(37.4%) in double pattern and P-G(23.7%) in single pattern.
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