Vol. 9, Issue 12, Part G (2025)

Theileriosis is a tick-born haemoprotozoan disease caused by Theileria spp., which is one of the major constraints of cattle production in India. Exotic and crossbred cattle are more susceptible than the indigenous breeds of cattle. It is characterised by elevated rectal temperature, enlargement of prescapular lymphnodes, lacrimation, salivation, nasal discharge and reduced milk production. A total 135 suspected cattle were screened for theileriosis from Veterinary Clinical complex of the college, in anand, Animal Disease Investigation Laboratory, ARDA Division, Amul Dairy, Anand, and from surrounding villages. Amongst them 47.41% (64/135) cattle were found positive for theileriosis, diagnosed by microscopic examination. Highest incidence of theileriosis in cattle was found in age group 6-10 years (54.00%) and the lowest incidence was found in <6 month of age group (28.57%). The sex wise incidence was higher in female (49.59%) than in male (25%). The breed wise incidence found was higher in HF crosses (52.34%) than the indigenous breeds (28.57%). The haematological finding revealed that the values of haemoglobin, packed cell volume, total erythrocytes count, lymphocytes and mean corpuscular haemoglobin concentration were decreased and Neutrophils, total leucocytes count, monocytes, eosinophils, mean corpuscular haemoglobin and mean corpuscular haemoglobin concentration were increased in theileriosis infected cattle as compared to healthy cattle. The serum biochemical examinations revealed that the values of total protein, albumin, total glucose was decreased in theileriosis infected cattle however, Gamma glutamyl transferase, aspartate aminotransferase, total bilirubin and alanine aminotransferase were increased in theileriosis infected cattle as compared to healthy cattle. Serum creatinine and blood urea nitrogen were showed non-significant difference in theileriosis infected cattle.