what is colostrum?
<answer> It is a form of milk produced by the mammary glands of mammals (including humans) in late pregnancy. <context> Colostrum (known colloquially as beestings, bisnings or first milk) is a form of milk produced by the mammary glands of mammals (including humans) in late pregnancy. Most species will generate colostrum just prior to calving. Colostrum contains antibodies to protect the newborn against disease.