Fig. 1. Failure of colostral immunoglobulin G transfer (IgG < 10 mg/mL; day 2 of calf life) (A) and mean ± SE blood IgG concentrations at 2, 7, 30, and 60 days of life (B) in Hanwoo calves fed commercial colostrum (white columns) versus natural colostrum (black columns).

Means with an asterisk at each time point differ (p < 0.05).