Final answer:
Breast milk composition changes during the first days and throughout a feeding. The initial colostrum is rich in antibodies and nutrients, while the milk becomes thinner and then richer as the feeding progresses.
Step-by-step explanation:
The composition of breast milk changes during the first days of lactation and in the course of a single feeding. In the first few days after giving birth, the mother produces colostrum, which is a thick and yellowish fluid rich in antibodies and nutrients. This helps to provide the newborn with important immunity and support their digestive system.
As breastfeeding continues, the composition of breast milk changes. It becomes thinner and more watery, known as foremilk, which quenches the baby's thirst. As the feeding progresses, the milk becomes richer and creamier, known as hindmilk, which provides the baby with more calories and fat.
It is important for the baby to receive both foremilk and hindmilk during a feeding to ensure they receive a balanced and nutritious meal.