双甲敌鼠胺盐毒杀黄胸鼠,褐家鼠试验研究

目的：了解双甲敌鼠胺盐对云南主要家栖鼠的毒杀效果。方法：采用口灌法。结果：对黄胸鼠的急、慢性口服LD50及95％可信限为104.69(82.42~126.96)、3.64(2.82~4.46)mg／kg，对褐家鼠为15.80(12.27~19.33)、0．73(o．57~o．89)mg/kg；黄胸鼠对0．05％和0．1％毒饵的摄食系数均大于0.6，褐家鼠对0.025％和0.05％毒饵的摄食系数均大于0.7；现场试验,0．l％稻谷毒怀对黄胸鼠的杀灭率为92.43％，0.05％小麦毒饵对褐家鼠的杀灭率为94．63％。结论:该药适口性好，灭效高，具有推广应用价值。

Experimental Study of Shashuxing against Rattus flavipectus and Rattus norvegicus

The Shashuxing was pnduced by Liaoning Institute of Chemical Industry. We determined the toxicity of Shashuxing with pouring oral method to rats. The values of acute and chronic oral LD50 with 95%Confidence limit of Shashuxing were 104. 69 (82. 42 - 126. 96), 3- 64 (2. 82 - 4. 46 ) mg/kg for R.flavipectus.The values of acute and chronic oral LD50 with 95% confidence limit of Shashuxing were 15.80(12. 27 - 19. 33), 0. 73 (0. 57 - 0. 89)mg/kg for R. norvegicus.The feeding indes of R. flavipectus >0. 6to 0. 05 % and 0.1 % Shashuxing baits, the feeding index of R. nondus> 0. 7 to 0. 025% and 0. 05 %Shasuxing baits in palatability test. The field trial against R. flavipectus was was carried out with 0. 1 % rice bait, the population decline was 92. 4%. The field trial against R. norvegicus was carried out with 0. 05 %wheat bait, the population decline was 94. 63 %. The results showed the Shashuxing was well ghatable andPotent to R. flavipectus and R. norvegicus.It is worth the popularization and application in Yunnan.