author(s)
Stephanie S Pradhan and Vipan Kumar Gupta

abstract
The present study has been conducted to determine the haematological parameters of calves suffering from respiratory diseases for a proper diagnosis and prognosis of a disease in addition to the clinical examinations and other diagnostic procedures. Blood was collected via jugular vein from extremely sick and apparently healthy animals from Palampur, Himachal Pradesh. Blood smears were prepared instantly on glass slides for assessing the blood picture. Total leucocyte count (TLC) and Differential leucocyte count (DLC) were carried out according to the standard protocols. The TLC between the healthy and sick calves did not differ significantly. However, in DLC the sick animals showed significant neutrophilia associated with a fall in lymphocytes. In more severe cases there was a hike in the number of band cells and metamyelocytes. Neutrophils are the first cells that respond to bacterial infection so an elevation in neutrophil count could be suggestive of some ongoing bacterial infection.