Abstract
The therapeutic efficacy of cypermethrin and ivermectin against Psoroptes ovis mites that caused psoroptic mange in sheep was evaluated in 10 naturally infected sheep of both sex 2-5 years old. Cypermethrin solution in 1/1000 dilution at once time for treatment of first group (n=5), showed better therapeutic efficacy against natural infection with Psoroptic mange, than ivermectin which used for treatment of sheep in second group (n=5) at dose of 0.4mg/kg body weight subcutaneously for once time also, the results was evaluated dependent upon the order of severity of skin lesion during 3, 7 and 14 day post treatment. Conclusion the results of that study was showed ivermectin can be used for treatment of mild and moderate cases of Psoropteic mange of sheep, while cypermethrin was used against sever cases.