| Survey of Bovine Mastitis in Gyeonggido 4. Susceptibility of Staphylococcus and Streptococcus Isolates to Chemotherapeutic Agents |
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Bong Whan Son, Hyo Min Kim, Joo Woong Han, Heung Whan Jung, Soo Chang Kim |
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Northern Branch of Gyeonggido Domestic Animal Health Center |
| 경기도지역(京畿道地域)의 유우유방염(乳牛乳房炎)에 관한 조사(調査) 4. 유우유방염(乳牛乳房炎)에서 분리(分離)한 Staphylococcus와 Streptococcus의 항균제(抗菌劑)에 대한 감수성시험(感受性試驗) |
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손봉환, 김효민, 한웅주, 정흥환, 김수장 |
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경기도 가축보건소 북부지소 |
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| Abstract |
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The susceptibility of 536 isolates of Staphylococcus and 313 isolates of Streptococcus to a number of chemotherapeutics were studied. These organisms were isolated from bovine mastitis during 1973 and 1974. In addition to this, the rate of multiple resistance of 425 isolates of Staphylococcus and 164 isolates of Streptococcus, isolated in 1974, to the chemotherapeutics was analysed. The results obtained in this work were summerized as follows: 1. Staphylococcus and Streptococcus isolated in 1974 showed a higher resistance, with 3 exceptions of chemotherapeutics, than the isolates of 1973. 2. Staphylococcus isolated in 1973 and 1974 showed a higher susceptibility than Streptococcus. 3. The strains of Staphylococcus resistant to colistin were 39 strains (9.2%), to colistin and sulfisoxazole 33 (7.8%), to streptomycin, kanamycin, colistin and sulfisoxazole 20 (4.7%), and to penicillin, colistin and sulfisoxazole 18 (4.2%). 4. The strains of Streptococcus resistant to colistin were 17 strains (10.4%), to streptomycin, kanamycin, colistin and sulfisoxazole 13 (7.9%), to colistin and sulfisoxazole 11 (6.7%) and to penicillin, colistin and sulfisoxazole 11 (6.7%). |
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