(Immucell) First Defense Technology Dried Whey Protein Concentrate provides specific globulin proteins to help strengthen the immune system of newborn calves. Highly concentrated and easily absorbed for an immediate safeguard against disease. Derived from natural bovine colostrum. Mix 1 scoop with the newborn calf's first liquid feeding of colostrum or colostrum replacer. Feed immediately after birth, if practical. Do not use in conjunction with a modified live vaccine at birth, as the antibodies in First Defense will neutralize the vaccine.