These sacs are clustered together into lobes. Each lobe has a single milk duct that carries milk to the nipple. During pregnancy, your body prepares to make milk whether or not you plan to nurse. You will also notice that the nipples seem to enlarge and become darker and more pronounced. The blood vessels supplying the breasts enlarge and become more visible.
Colostrum is the first milk secreted after the baby's birth.
This is the beginning of milk production. Colostrum contains proteins and other substances to nourish the new baby as well as antibodies to protect him or her from infection. Within a few days after delivery, the colostrum will change to mature milk. Advantages of Breast-feeding Mother's milk is the most balanced food for a normal baby. It has the right amount of all the nutrients the baby needs.