Infant nutrition made simple.

During the first six months of life, infants should gain about 1 oz. of weight daily. In the second six months of life, they should gain at about half that rate. To attain this rate of weight gain, infants must receive 120 kilocalories (kcal.) per kg. per day during the first six months and 100 kcal. per kg. per day in the second six months. Iron deficiency is the leading specific nutritional disorder in this age group.