Final answer:
The calorie requirements for an infant in their first six months depend on factors such as weight and growth rate. On average, a healthy, full-term newborn triples their birth weight by the first birthday.
Step-by-step explanation:
The calorie requirements for an infant in their first six months depend on factors such as weight and growth rate. On average, a healthy, full-term newborn triples their birth weight by the first birthday, which means they gain about 28 grams per day during the first two months and 0.45 kilograms per month for the rest of the first year.
Since an average breastfeeding mother needs approximately 720 calories extra per day to meet the demands of lactation, a well-nourished newborn who consumes about 850 ml of milk daily, which provides an energy value of 68 Kcal/100 ml, would require about 578 calories per day from milk.