烟台市2种毒饵灭鼠效果的观察

目的了解烟台市配制的第1代抗凝血灭鼠剂杀鼠迷毒饵和第2代抗凝血灭鼠剂溴敌隆的灭鼠效果。方法统一时间、统一方法，实施饱和投毒法。投毒后的第2、3天查补，吃多少补多少，吃光加倍投，每间房（15m^2）投毒饵2堆，每堆10g。室外在鼠经常出没的墙根每5ml堆。结果盗食率2组均以投毒后第2天最高，第3天最低。溴敌隆和杀鼠迷2种毒饵的校正灭鼠率分别达到了81．00％和91．09％。结论2种毒饵盗食率及灭鼠率均较高，特别是杀鼠迷，可作为城乡大面积灭鼠时推广使用的鼠药。该市鼠类是否对溴敌隆产生抗药性需引起注意。

Observation of Deratization Effect of 2 Kinds of Poison Bait

Objective]To understand the deratization effect of 1st generation anticoagulant rodenticides Coumatetralyl and 2nd generation anticoagulant rodenticides Bromadiolone prepared in Yantai City.Methods]In the same time and by using the same method, saturation method was adopted in poisoning. After 2 or 3 days, checking up the poison baits, the consumption volume was supplied. 2 stacks of poison baits were placed in 1 room (15 m2), 10g for each stack. Poison baits were placed 1 stack for every 5m along the foot of wall where frequented by rats.Results]The maximum of stealing food rates of the 2 groups appeared on the 2nd day, and the minimum appeared on the 3rd day. The deratization rate of Bromadiolone and Coumatetralyl was 81.00% and 91.09% respectively.Conclusion]The stealing food rate and deratization rate of 2 poison baits were high, especially the Coumatetralyl can be popularized for large-scale deratization. It is necessary to investigate whether the drug-resistance of Bromadiolone exist among local rats.