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KMID : 1023519970200030281
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Korean Journal of Veterinary Service
1997 Volume.20 No. 3 p.281 ~ p.288
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Studies on the Streptococcus suis isolated from slaughtered pigs
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Yoon Seun-Jong
Koh Hong-Bum
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Abstract
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Streptococcus suis has been identified as a major cause of contagious disease in pigs Ithas been isolated worldwide from pigs suffering from meningitis, bronchopneumonia, polyserositis, polyarthritis and septicemia. Two hundred and fifty-five lung samples of slaughter pigs with gross lung lesions were collected from Jan. to Dec. 1995 in southern Chonnam area. Isolation of S suis were tested by biochemical, serological methods and antimicrobial susceptibility. The results were summerrized as follows ; 1. S suis was Isolated from 30 of 254 pneumonic lungs, 14 Isolates were isolated only, 12 were isolated with p. multocida and 4 were isolated with unidentified Gram positive cocci. 2. In biochemical characteristics studies, all isolates were not grown in 6.5% NaCl medium, and most isolates utilized L-leucine-2-naphtylamide and trehalose, didn’t utilize sorbitol, ribose and L-arabinose. 3. In slide agglutination test, 6(20%) Isolates were classified as serotype 2, 4(13.3%) isolates were as serotype l/2, 16, 2 and 2(6.6%) were as serotype 1, 4, 13. 4. S suis isolates showed marked susceptibility to amoxicillin, oxacillin, cephalothin and cepoferazone and high resistance to kanamycin, streptomycin, tetracycline and erythromycin.
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KEYWORD
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Streptococcus suis, Slaughtered pigs, Pneumonic lungs, Serotype
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