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在社会经济水平低下的智利婴儿由于很少摄入动物性食物而面临单一锌、铁营养素缺乏的风险。对42个来自社会经济状况低下群体的生长发育正常的健康男童进行强化奶粉服用,在婴儿18月龄时测定分析其锌、铁营养状况,收集血液和头发样本以测定血浆和发锌含量,及血色素、红细胞压积和血清铁蛋白。研究结果显示,给婴儿提供强化奶粉直至18月龄,较好地改善了这些儿童体内铁状况,但对锌的影响作用可能不大;建议对锌强化量的水平进行重新评估。
Chileans at low socioeconomic levels are at risk of a single lack of zinc and iron nutrients due to their low intake of animal foods. Forty-two healthy boys with normal growth and development from a low socioeconomic group were enrolled in a fortified milk formula. Nutritional status of zinc and iron was measured at 18 months of age in infants. Blood and hair samples were collected to determine plasma and zinc levels, And hemoglobin, hematocrit and serum ferritin. The results of the study showed that providing infants with fortified milk powder up to 18 months of age improved the iron status in these children better, but the effect on zinc may not be significant; it is recommended that the level of zinc fortification be reassessed.