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Objective: Distinguish of Babesia species and tick infestation in
sheep in Ardabil.
Design: Cross sectional study. Animals: One hundred and eighty one sheep infected with Babesia. Procedure: Blood smears obtained from sheep, stained with Geimsa
and examined microscopically. Statistical analysis: Chi-squire test.
Results: The result indicated that out of 90 sheep infected with Babesia 78(43.09%), 2(1.1%) and 10(5.52%) were infected with
B.ovis, B.motasi and mixed infection with B.motasi & B.ovis
respectively. Rhipicephalus, Dermacentor, Haemaphysalzs and
Hyalomma were isolated form sheep. Implications: This study shows that problems with Babesia in this region mainly related to B.ovis. The result also indicated that
Rhipicephalus bursa was dominant vector of B.ovis in this region
(P<0.05)..