A Survey of bovine Theileriosis in carcases of sanandaj slaughterhouse

Theileriosis is an important clinical disease and cause of mortality of ruminants in the enzotic area such as Iran. Meat from this animal must be deleted. This study was made to determine the prevalence of bovine Theileriosis in sanandaj slaughterhouse in 1385. A total of 252 suspected cases with enlargmented lymph node (theileria annulata cause severe lymphoproliferative disorders in cattle) were examined and investigated for the presence of Theileria schizont in appropriate lymph node smears. In this study, 26 cases (10.3 %) were infected. Seasonally, the prevalence of Theileria infection reached the highest level in June (32%) and July (16%) and August (20%), while a decrease was observed in February (0 %) and march (0 %). There was significant differences between the rates of affection in breed` sex and age. The most prevalence of Theileria infection absorved in third age group (above 4 years old) (66%) and female genus (77%) and hybreed race (54%).