南九州地区の馬におけるLeptospira血清凝集反応の所見について

概要

論文の詳細を見る
Since the earliest researches made by Inada and Ido, Japanese authors have chiefly contributed to the studies of human leptospirosis. On the other hand, the progress in the study of livestock leptospirosis in Japan is mainly owing to the valuable works by Yamamoto. However, whether only rat and dog are involved in the chain of infection or whether other domestic animals, like horses, cows, swine and sheep, also may be responsible for human and animal infections is not known, but from the standpoint of public health and animal sanitations, these facts are very interesting. The recent observations by many investigators have indicated the close relationship between leptospirosis and periodic ophthalmia in horses. It is recognized that leptospirosis is rather warmer district diseases than colder, and that periodic ophthalmia in horses is very frequently found in South Kyushu of Japan. The lack of information concerning the etiology and prevalence of horse-leptospirosis, has led the present author to this study. During the period of July 1954,to June 1958,the serums of 879 horses were assembled and the serological tests by means of Schuffner-Mochtar's were tried. As antigens for this test, L. australis, L. autumnalis, L. icterohaemorrhagiae, L. canicola and L. hebdomadis are used. In order to obtain the precise results, the author made some preliminary experiments concerning some problems on the techniques of S.-M. test. There was a great difference in the positive ratio of the serological reaction between the slaughtered horses and the farm horses, showing 41.5% (sometimes 100%) of slaughtered horses, as compared with 20.1% of farm horses. In addition, the fact that many horses are sent to the slaughter house because of the chronic unknown and refractory diseases, makes it possible to speculate that leptospirosis is more widespread than is realized. In farm horses, serum showed 45.15% positive to L. heb. and 37.6% positive to L. ict., these two being main sero-types in the test. From the results of the tests, the author found that almost all the horses in a given district have the same one or more sero-types. The relations between the geographical distribution and the positive ratio are shown in Table 21. There was close relationship between morbidity and age of horses, positive ratio of the test increasing with age. Neither sex nor the number of erythrocytes had obviously any effect on the positive ratio.
鹿児島大学の論文

南九州地区の馬におけるLeptospira血清凝集反応の所見について

スポンサーリンク

概要

著者

関連論文

スポンサーリンク