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Epizootical geographic clusters of bovine leukemia virus infection in Japan
Takeo Sakai,Tomoyoshi Masshiyama,Setsuko Ohkubo,Chong Sam Yoon,Won Chang Lee 한국예방수의학회 1990 예방수의학회지 Vol.14 No.1
Sera of dairy cattle collected in Tochigi and Saitama Prefectures in 1986-1987 were examined for BLV antibody by agar gel immunodiffusion. In Tochigi Prefecture, 130 of a total of 2,279 sera were positive(mean positivity rate:5.7%), and a geographic cluster was observed in region with high positive rates(p<0.05). In Saitama Prefecture, 65 of the 2,103 samples were positive(mean positivity rate:3.1%), showing no geographic cluster of BLV infection as observed.
Lee, Sang-Mog,Lee, Won-Chang,Sakai, Takeo,Hamakawa, Masaaki,Yoon, Chong-sam,Masuda, Testuya 건국대학교 동물자원연구센터 1991 動物資源硏究誌 Vol.16 No.-
Actinobacillus Pleuropneumonia(AP)에 感染된 豚에게 doxycycline hydrochloride(DOXY)와 thiamphenicol(TP)를 각각 100ppm에서 200ppm씩 食餌에 첨가하여 7일간 投與한 결과에서는 기침(咳)과 鼻漏의 치료효과가 관찰되었으며, 17일 후에서는 體重의 증가와 辭料攝取率이 向上되었고, 部檢上 肺藏에 病變이 없었으며, 겸하여 DOXY의 100ppm과 200ppm 投與群에서는 肺臟에서 Actinobacillus Pleuropneumonia와 KPasteurella multocida가 분리되지 않았다. In order to an experimental find out on the antimicrobial efficacy of doxycycline hydrochloride(DOXY) and thiamphenicol(TP) were given to pigs infected with Actinnobacillus pleuropneumonia(AP) for 7 days. Clinical therapeutic efficacy on coughing and rhinorrhea was observed with 100ppm to 200ppm in the diet. Weight gain and food consumption were improved and pulmonary lesions were not observed at necropsy in the 100 ppm or 200 ppm groups on day 17. In addition, neither Ap nor Pasteurella multocida(Pm) was isolated from the lungs of pigs in the 100 ppm or 200 ppm DOXY on day 17. Key word: antimicrobial efficacy of DOXY and TP.
CARCINOGENICITY OF BRACKEN FERN IN ACI/N RATS
Kodama, Yukio,Sakai, Takeo,Yoon, Chong Sam,Horiuch, Shigetomo,Naito, Katsushi,Natori, Shisaku,Lee, Won Chang 대한보건협회 1990 대한보건연구 Vol.16 No.1
As part of a study to evaluate the caroinogenicity of bracken fern, we have prepared a freeze-dried extract of bracken fern(FDE-BF), spray-dried extract bracken fern(SDE-BF), or have used unprocessed bracken fern(UP-BF) and have mixed each with rat food and have fed these 3 separate diets to separate groups of rats(6 animals per group) for 27 weeks. After 27 weeks, all of these rats then were given basic diet without bracken fern or its extract and sacrificed after the 52nd week and examined. In group FDE-BF and SDE-BF, body weight gain were inhibited, and one rat in each of these two groups developed transitional cell carcinoma of urinary bladder. In group UP-BF, most rats died during the experimental period, and a transitional cell carcinoma, an adenocarcinoma of small intestine, and an adenocarcinoma of large intestine were observed in one rat and an adenocarcinoma of small intestine in each of 3 other rats of this group. Thus, the incidence of carcinoma was found to be markedly lower in Groups FDE-BF and SDE-BF than in Group UP-BF, indicating that the carcinogenicity of the unprocessed bracken fern to be more greater.