The Survey of Bovine Theileriosis in Borujerd Township

This study was performed during the one year period, from March 21st 2011 to 2012, for detection v infection rate of Theileriosis in Borujerd township, and 860 cows were tested (220 samples in each season). First, the data related to every cow was recorded in a questionnaire. Second, all cows were clinically examined and the positive cases which had Lymphadenitis, icterus in the vaginal mucosa and eye, fever, constipation, hyperpnea, diarrhea, coughing, watery eyes and  mouth were distinguished and depleted from ear and forthwith were fixed by ethyl alcohol. Last, the blood smears samples were stained by Giemsa method and tested from view point of presence of piroplasmosis figures. To sum up, 536 of the 860 samples (62.32%) were positive and there were significant differences between male and female (P≤0.05). The most amount of infection was in spring (52.23%) and the least was in winter (0.93%) (P≤0.05).The most of infection rate was in over three years old cows (71.26%) and the least was in under one years old cows (3.54%) (P≤0.05).