土からのToxoplasmaオオシストの検出およびその確認

伊藤 進午, 角田 清, 堤 可厚, 松井 利博, 西川 洋昭, 飯田 辰夫, 佐々木 栄英

doi:10.1292/jvms1939.37.6_549

土からのToxoplasmaオオシストの検出およびその確認

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書誌事項

タイトル別名

Detection and Confirmation of Toxoplasma Oocysts in the Soil
ツチカラノ Toxoplasma オオシストノケンシュツオヨビソノ

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抄録

An outbreak of swine toxoplasmosis occurred in a hoggery in Shizuoka Pre-fecture. In the hoggery, pigs had been fed soil with pig-feed for 3 consecutive days from1 week before the outbreak of the disease. Toxoplasma oocysts were detected directly fromthe soil in the hoggery.A combination (Metlaod III) of ultrasonic treatment and sugar floatation method gavesatisfactory results. Moreover, the isolation of Toxoplasma was established by the in-oculation test on mice with the suspension of oocysts collected by Method III. Therefore, the causal agent of swine toxoplasmosis in the hoggery was the Toxopalsma oocyst foundin the soil examined. It was indicated that Toxoplasma oocysts played an important rolein the transmission of toxoplasmosis in natural conditions.