Raising Pre-Weaned Calves Adapted from Dr. Sheila McGuirk’s 5Cs of calf raising Colostrum • Calves need 1 gallon (4 quarts) of fresh, clean colostrum within 6 hours of birth. • If the dam’s colostrum is not available, a colostrum REPLACER can be used. A replacer with at least 100g IgG is the minimum recommended. 150-200g IgG […]