EN
The study was performed on 47 young bulls originating from one herd. For anylysis the blood was taken four times every three monthsbeginning from the second or third month of the animals’ life. Statistically significant positive correlation was found between acid phospatase activity in granulocytes and the number of neutrophils and eosinophils, whereas negative correlation was stated between the number of lymphocytes and the results of NBT reduction.