Klossiella equi in a donkey--a first case report from Iran.

Klossiella equi is the only known and rarely reported coccidian parasite of the renal paranchyma of equids. An aged male donkey (Equus asinus asinus) was submitted to necropsy department of veterinary hospital. In histopathological study of renal sections different developmental stages of parasite were observed. These stages were as follow: Trophozoites, microgametes, macrogametes, sporont, budding sporont, sporoblasts, free sporoblasts, mature sporoblast and sporocyst. Parasitic infection with K. equi was encountered in the donkey. According to literature review this is the first report of donkey klossiellosis in Iran.