Clinical and haematological changes in cattle naturally affected with tropical theileriosis

Abstract

The present study was conducted to record the clinical and haematological changes in cattle infected with Theileria annulata. Blood samples were collected from naturally affected cattle presented to Veterinary Clinical Complex, C.V.Sc & A.H, NDUAT, Ayodhya from September, 2017 to April, 2018 and clinical signs were properly recorded. The clinical signs recorded were reduced feed intake, pyrexia, pale conjunctival membrane, dyspnoea, enlargement of superficial lymphnodes mainly prescapular lymphnodes with reduced milk yield. Out of 34 animals screened, total eight animals were positive for Theileria annulata in the peripheral blood smear. The mean value of haemoglobin concentration, packed cell volume and total RBCs count was significantly reduced. There was also decrease in total leucocytic count, neutrophils, lymphocytes and monocytes. This study indicate that Theileria infection in cattle causes anemia and leucopenia.