Separate living quarters shortly after birth protect the health of the calf by ensuring the best individual care. Since newborn calves need time to build up their immune systems, it is better that they are not exposed to germs in the environment or germs that can be passed on from older animals. Another way farmers ensure the health of their calves is by feeding newborns two to four quarts of colostrum—the first milk the mother produces after giving birth. This special milk is usually delivered by bottle. Colostrum is high in fat and protein and contains antibodies that help build the calf’s immune system.