Study the causes of growth retardation in pure breed imported calves after theileriosis in Abu-Shaeer cattle Farm /Diyala province


The aim of this study is investigated the causes of retardation in growth of purebred calves infected by Theileria annulata.Blood samples of infected group (treatment group) were taken once, and blood samples of the control group (clinically healthy) were taken also .Serum separation was done to two groups to determinate some blood factors levels as ferritin ,phosphorus ,glucose ,growth hormone ,total T3 and total T4.It was detected that mean values of serum Ferritin was significantly higher than the values of the control group and healthy animals.No significant effect of the infection on the phosphorus and T3 levels ,While there were significant depression in serum levels of glucose ,growth hormone and T4.