氰氨化钙杀血吸虫卵和杀蛆蝇效果  

Effect of calcium cyanamid on killing eggs of Schistosoma japonicum and maggots

作　　者：魏望远[1] 祝红庆[2] 刘宗传[1] 吕功良[1] 丁良[1] 郭家钢[2] 

机构地区：[1]湖南省血吸虫病防治所,岳阳414000 [2]中国疾病预防控制中心寄生虫病预防控制所

出　　处：《中国血吸虫病防治杂志》2009年第2期127-129,共3页Chinese Journal of Schistosomiasis Control

摘　　要：目的观察氰氨化钙对日本血吸虫卵和简易厕所粪坑内蛆的杀灭作用。方法采用对照方法,观察室内和现场牛粪与氰氨化钙(W/W)和粪坑中氰氨化钙与粪液(W/V)不同比例杀灭血吸虫卵和蛆的效果。结果1%(W/W)氰氨化钙与集卵牛粪沉渣拌匀2 h后均不能孵出毛蚴;室内按氰氨化钙与牛粪(W/W)2%堆积牛粪10 cm和20 cm厚加一层氰氨化钙,分别于5、7 d抽样孵化,未发现毛蚴;现场用原粪加2%(W/W)氰氨化钙搅拌堆积,2 d后抽样不能孵出毛蚴。1%(W/V)氰氨化钙撒入粪液搅匀,3 d蛆死亡率100%,效果维持15 d,苍蝇密度比对照组显著降低。结论氰氨化钙对血吸虫卵中的毛蚴和蛆蝇有较强的杀灭作用。Objective To observe the effect of calcium cyanamid on killing eggs of Schistosoma japonicum and maggots in cesspit of simple toilets. Methods Cow clung and calcium cyanamid （W/W） , and liquid excreta in cesspit and calcium cyanamid （ W/V ） were mixed with different proportians, and the effects of calcium cyanamid on killing eggs of Schistosoma japonicum and maggots were observed in fields and indoor, respectively. Results Calcium cyanamid with the concentration of 1% （W/W） and cow dung dregs with eggs were mixed for two hours, and there was no miraeidium hatched. Indoor, the cow dung dregs with thickness of 10 cm or 20 cm were put on a layer of calcium cyanamid with a proportion of 2% , for 5 and 7 days, respectively, and then sampled and hatehed, and no miracidium was found. In fields, the cow dung and calcium cyanamid with concentration of 2% （W/W） were deposited for 48 hours, and then sampled, and there was no miracidium hatched. Calcium cyanamid with concentration of 1% （W/V） was poured into liquid excreta and homogenized, and after 3 days, all maggots were killed, and the effect lasted for 15 days. The density of flies in the toilet decreased significantly compared with the control. Conclusion Calcium cyanamid can kill miracidium in eggs of Schistosoma japonicum and maggots effctively.

关 键 词：氰氨化钙 日本血吸虫 虫卵 蛆 

分 类 号：R383.24[医药卫生—医学寄生虫学]