IN THE NAME OF ALLAH
Stages of lactation
Human lactation can be divided into four phases that differ in the composition and volume of milk produced:
1- Colostral: Colostrum is secreted for the first three to five days after delivery. It is rich in secretory IgA, lactoferrin, vitamin A, and sodium compared with mature milk but has relatively low concentrations of fat, lactose, and vitamin B1
2- Transitional: transitional milk follows until the end of the second week.
3- Mature: mature milk is the produced during full lactation (whiter in color). Mature breastmilk composition changes during the course of lactation, although not as markedly as in the early weeks. Many nutrients show a gradual decrease in concentration of around 10% to 30% during the first year of lactation, often reaching a low plateau thereafter.
4- Involutional: The milk at the end of lactation. It is characterized by low lactose and high concentrations of protein, fat, and sodium These definitions are arbitrary; the timing varies from one mother to another, and composition does not change abruptly. Notably, Because milk volume is low during the colostral phase, rising slowly during the first week to the higher levels of established lactation,the daily intake of most milk components by breastfed babies increases after birth, reaching a peak after several weeks .The exception is secretory IgA and, hence, total protein intake, which is maximal in the first week which gives the newborn a good protection against
many pathogens
my best wishes
black rose