Plasma fibrinogen, and serum γ-globulin, IgG1, IgG2, IgM, and haptoglobin were estimated at 30 to 60 h and again at 21 to 28 d of life. Additionally, the immunoglobulin index (IIg3–4) was calculated. The main cause of FPT and PFPT in the calves was poor vitality associated with dystocia and low volume of ingested colostrum. The calves born to primiparous cows were more endangered than those born to multiparous cows.