ESTIMATION OF NITROGEN RETENTION BY N-BALANCESTUDIES AND THE ADEQUATE PROTEIN INTAKEOF PRESCHOOL CHILDREN / 营养学报

Nitrogen balance of normal developed, healthy preschool children 4-7 yrs old, lodged in the kindergartens was studied. 105 preschool children were divided into 15 groups at different protein intakes ranged from 6.28g /MJ to 10.35g/MJ. Prominant correlationship was shown between the intake of protein g/MJ (x) and the retained nitrogen g/kg (y), r= 0.6709, n= 15, p

THE EFFECTS OF MULTIVITAMIN FORTIFIED MILK POWDER ON THE GROWTH AND THE NUTRITIONAL STATUS OF YOUNG CHILDREN / 营养学报

Fifty-four children, aged 1.5-3.5 years, were selected from a nursery and divided into three groups. To the children in group 1 multivitamin fortified formular milk powder of Hai-He brand (70g daily) was given as a supplementary food in addition to the normal diet and whole milk powder of Hai-He brand was given to group 2 as another supplementary food. The third group served as control. This observation was lasted for three months. At the end of the third month, the increments of body weight of the children, tricep skinfold and circumference of upper arm of group 1 were higher than those of group 3 significantly, but there were no significant differences between group 1 and group 2. The hemoglobin content of group 1 increased by 0.8g/dl but group 2 and 3 decreased by 0.53g/dl and 0.72g/dl respectively. At the end of our observation, the concentrations of vitamin B1, C and PP in urine of group 1 were higher than those of other two groups by vitamin load test.Thus, we may consider that the multivitamin fortified milk powder is better than the whole milk powder in improving the vitamin and iron nutritional status of young children.

EFFECT OF FORTIFIED FOOD ON THE NUTRITIONAL STATUS OF PRESCHOOL CHILDREN / 营养学报

Three kinds of fortified biscuits and bread were given as breakfast for 5 months to 106 preschool children 4-6 years old lodged in a kindergarten, with a control group taking common biscuits and bread without fortification. 6 g protein and 160 kcal were supplied by 50 g of fortifed foods in which 0.25 g lysine, 0.25 g lysine and 0.8 mg riboflavin, and cod liver oil and calcium in addition to lysine and riboflavin were fortified respectively. The results showed that a diet with intake of 2.1 g protein and 71 kcal/kg body weight fortified on the average by 228 mg lysine or 228 mg lysine and 1.1 mg riboflavin increased the monthly increment of body weights, heights, and urinary excretions of creatinine per day. There was also a tendency of improvement, in nitrogen retention. The urinary excretion of riboflavin in load test was increased in the group taking the second kind of fortified foods.