) Newborn Calf CR Colostrum Replacer is formulated with 160 grams of Globulin Protein (IgG). Made exclusively from high quality maternal colostrum, without the addition of blood serum, whey, or eggs. Use to replace maternal colostrum when the supply is limited or low quality. Newborn Calf CR provides the lipids and carbohydrates that are vital to a healthy start. One packet mixes easily with 2 quarts warm water or colostrum. Feed immediately or within 12 hours of birth.