Human reproductive ecology to aid infant survival and growth. Lactational strategies vary cross-culturally, but can typically be defined by sibling sets and sex ratios, frequency of nursing, entire lactational duration, and milk composition. Milk is composed of my bioconstituents, but only a few will be outlined here. In the first days of puerperium, the first milk is thick and yellowish, also called colostrum. For weeks after that, mature milk is expressed and it has been shown that fetal-mammary gland signaling occurs even before birth in determining milk type and concentrations based on the fetus sex. Colostrum plays an important role in establishing the
Infant nutrition formula-fed. Colostrum is a great source of nutrition for a newborn baby, it is a thick yellow fluid that a mother first produces after birth. It has valuable nutrition that aids the baby with building immunity because it helps destroy disease-causing viruses. Other benefits of colostrum include: prevention of jaundice, aiding the baby in passing their first stool, building a strong immune system, providing a great number of vitamins and protein, and prevents low blood sugar in babies. Overall, the sticky, thick, yellow liquid called colostrum has many benefits for a newborn baby which can be only provided to the