author(s)
Dipali Parmar and Dinesh Chandra

abstract
Theileriosis is a group of disease caused by variety of tick species worldwide. Theileria is an obligate intracellular protozoan parasite that parasitizes host red blood cells (RBC) and white blood cells (WBC). Disease is mostly seen in cattle, sheep and goat as well as in wild and captive ungulates. Most important species of theileria infecting cattle is T. annulata and T. parva. T. annulata is the cause of Bovine Tropical Theileriosis which leads to heavy morbidity and death tolls around the globe. Tick species responsible for the disease transmission in India is Hyalomma anatolicum. Parasite is transmitted by the infected saliva of the tick during feeding. Reports on disease occurrence are more common in cross bred cattle and exotic breeds. Following study was conducted among 25 cross bred animals having a history of tick infestation with elevated body temperature, lymph node enlargement and anaemia as the main clinical signs. Blood sample collection was done by a jugular puncture in EDTA vials. Microscopic examination by Giemsa based thin blood smear was carried out for confirmatory diagnosis. Haematological parameters were studied and comparison between haematology and severity of infection was carried out. Treatment with Inj. Buparvaquone @2.5mg/kg single injection, Inj. Oxytetracylines @10mg/kg for 3 days along with other Supportive therapy was adopted.