During early lactation, what is the specific name for first milk? What is its function in new born human baby ?

Explanation

Colostrum. The first milk which comes from the mammary glands of the mother just after child birth, for 2 or 3 days is called the colostrum. This is yellowish fluid that contains cells from the alveoli and rich in protein (lactalbumin and lactoprotein) but low in fat. It is preferred over normal milk because it contains antibodies (IgA is the major immunoglobulin in it) that provide passive immunity to the new born infant.