青海环湖地区绵羊寄生虫病防治程序试验研究

EXPERIMENT OF PARASITOSIS PREVENTION AND TREATMENT PROGRESS IN SHEEP OF PRE-QINGHAI LIKE

根据环湖地区绵羊主要寄生虫病的发生和流行规律以及防治现状，1月用阿维菌素按0．2mg／kg·BW剂量投服2次驱杀内外寄生虫的基础上，4月初每羊投服1粒芬苯哒唑控释丸或丙硫咪唑缓释药弹，既可以驱除冬季感染的部分虫体，又预防了春季以后羊2次遭受寄生虫的重复感染，有效期达3个月以上，虫卵减少率达93％以上．经试验组与对照组相比，芬苯哒唑控释丸投药后4—5月虫卵下降率达100％，6月份虫卵下降93.82％，7～9月份分别下降64．74％、64．16％和64．02％；对照组6月份出现肺线虫幼虫，试验组8月份出现。丙硫咪唑缓释药弹投药后4．5月份虫卵下降率为100％；90d下降97．28％。

According to main parasitosis occurrenco, prevalence rule and prevention and treatment status of sheep, based on aver mection had been given twice in January as dosage 0.2 mg/kg weight to deworrn, a capsule of fenbendazole or albendazole were given to a sheep in April. Those can be not only repelling some parasite which infected in winter, but preventing parasite re-infected in spring, the effect can be kept over three mouths, the reductive rate of egg were 93%. After given fenbendazole controlled-release bolus, the reduction rate of egg of the expriment group were 100%, 93.82%, 64.74%, 64.16% , 64.02% in Apr-May, June, July-September, respectively. The pulmo nematode larvae of control group were occurred in June, but that of experiment were occurred in August, After given Albendazole huanshiyaodan, the reduction rate of egg were 100% in Apr-may, postgiven 90 days, reduction rate of egg were 97.28%.