TY - JOUR T1 - Efficacy of Ivermectin Pour-On Administration Against Natural Dirofilaria immitis Infestation in Native Dogs of East-Azerbaijan Province, Iran AU - Garedaghi, Y. AU - Khayatnouri, M.H. JO - Research Journal of Biological Sciences VL - 6 IS - 5 SP - 219 EP - 223 PY - 2011 DA - 2001/08/19 SN - 1815-8846 DO - rjbsci.2011.219.223 UR - https://makhillpublications.co/view-article.php?doi=rjbsci.2011.219.223 KW - Dirofilaria immitis KW -knott test KW -ivermectin KW -topical formulations KW -dog KW -Iran AB - One of the real problems that cause the public health risks in small animal yearly is parasitic diseases and some of these parasites are zoonoses. To overcome these problems, the use of antiparasitic drugs is necessary. Ivermectin is a broad spectrum antiparasitic agent and different routes of its administration such as injection, oral and pour-on were used. The aims of the current study were evaluation of the efficacy of ivermectin pour-on administration against natural Dirofilaria immitis infection in native dog and also determination the prevalence rate of this parasite in East-Azerbaijan province, Iran. In the present study, 60 native dogs were investigated by detection and enumeration of circulating microfilariae of Dirofilaria immitis were carried out at each visit by the modified Knott test. After confirming the infection with worms, ivermectin (0.5 mg kg-1) pour-on was administrated to infected dogs. Blood examination was repeated in 1, 7, 21 and 28 days post treatment. Results showed that total prevalence of Dirofilaria immitis infection was 71.66% in native dog of East-Azerbaijan province, Iran. Efficacy rate of ivermectin pour-on was 31.42, 63.49, 88.66 and 98.54% in 1, 7, 21 and 28 days, respectively. In conclusion, the effect of this drug against Dirofilaria immitis resulted in reduction in Knott test exceeded 98% so, this drug can be used in antiparasitic program in dog. Further investigations are necessary to evaluate the drug effect on other nematodes and parasitic infections. ER -