In Vitro Effects of Four Drugs on Vermicidal and Laying Capacity Inhibitory Action on Eurytrema Pancreaticum of Korean Cattle

한우췌질(韓牛膵蛭)에 대(對)한 사종약물(四種藥物)이 시험관내(試驗管內)에서의 살충효력(殺蟲效力) 및 배란억제효력(排卵抑制效力)에 관(關)한 실험(實驗)

Four drugs, bithionol, hexachlorophee, hexachloroethane and tetrachloroethylene, were tested on the in vitro effects of vermicidal and laying capacity inhibitory action to the Eurytrema Pancreaticum of Korean cattle, and the results obtained were as follows : 1) Of the four drugs, bithionol was most effective at both high and low concentrations. 2) The effects of hexachlorophene, hexachloroethane and tetrachloroethylene were less effective than that of bithionol, and the laying activity, at low concentration, was observed to increase at the early stage and decrease gradually thereafter. 3) Tetrachloroethylene was least effective of the four drugs.