This study was conducted to evaluate the impact of age on serum enzymes and hormones in crossbred calves from birth to three months of age. The research was carried out on six apparently healthy crossbred calves (aged 0-3 months) with similar physiological status. Blood samples were collected from the experimental animals on 0, 3, 7, 10, 15, 30, 45, 60, 75 and up to 90 days age of calves. Five ml of whole blood from each animal was collected in clot activator vacutainer. | Study the impact of age on enzyme and hormone profile of crossbred calves
