Therapeutic Effects of Butalex, Diminazen, Imidocarb and Chloroquin against Haemoproteus spp Infection in Pigeons G.R.Razmi1*, M. Soltani1, A.Afkhami2,F.Fourazanfar Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad Corresponding author\'s email: razmi@fum.ac Objectives: Haemoproteus spp is hemotropic parasites that infect red blood cells (RBCs) of pigeon. Three species ofHaemoproteus affect pigeons; H. columbae, H. sacharrovi and H. maccallumi. They are transmitted via blood sucking insects including mosquitoes and hypoboscid fly. Infected pigeons show no signs but, heavy infections can cause restlessness and anemia. There is no cure once the pigeons are infected. The aim of the study was to find an effective drug against Haemoproteus spp infections in pigeons. Materials & Methods: 36 infected pigeons were selected out of domestic pigeons using blood smears examination.Then, the infected pigeons were divided to six groups. The groups 1 to 4 were selected for testing of therapeutic effectsof Butalex(anti-Theileria) ,Diminazene aceturate(anti-Babesia) , Imidocarb(anti-Babesia) and Chloroquine (anti-Malaria) and the groups 5 and 6 were considered as control positive and negative groups for prescribed drugs. Results & Conclusion: The results showed that Butalex (Buparvaquone) had the best effect against Haemoproteus sppinfection in pigeons in dose of 2.5 mg/Kg. The Imidocarb and Berenil were not effective while the Chloroquine reducedthe number of gametocytes circulating in the infected blood. Based on the results it is concluded that Butalex can beused for treatment of Haemoproteus spp infection in pigeons. Keywords: Therapeutic effect, Haemoproteus spp, Pigeo

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