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近几年来敌百虫在害虫防治上应用很广。这种药剂对高等动物毒性较小,而且在动物体内具有杀虫作用,所以在家畜害虫的防治上已引起广泛的注意。本试验的目的是为了测定敌百虫对牛体内纹皮蝇(Hypo-derma lineatum de Villiers)幼虫的内吸杀虫作用及其有效剂量。试验于1960年1月在北京进行。药物是采用德国出品纯敌百虫。试验用的牛只均为6岁以上的淘汰牛。 一、试验方法 试验分为口服及注射二组。口服处理是将敌百由掺入淀粉作成药丸投服;剂量为每公斤体重30毫克、
Trichlorfon has been widely used in pest control in recent years. This agent is less toxic to higher animals and has insecticidal action in animal body, so it has drawn wide attention in the prevention and control of livestock pests. The purpose of this experiment was to determine the systemic insecticidal effect of trichlorfon on Hypo-derma lineatum de Villiers larvae and its effective dose. The experiment was conducted in Beijing in January 1960. Drugs are produced using pure trichlorfon in Germany. The test cattle are out of cattle over the age of 6. First, the test methods The test is divided into two groups of oral and injection. Oral treatment is the enemy from the incorporation of starch into pellets to vote; dose of 30 mg per kilogram of body weight,