Walravens P A, Hambidge K M
Am J Clin Nutr. 1976 Oct;29(10):1114-21. doi: 10.1093/ajcn/29.10.1114.
Some infant milk formulae have a lower zinc content than the original cow's milk. Zinc is a nutrient necessary for growth and, in this double-blind controlled study, the effects of supplementing Similac with iron with 4 mg/liter of zinc were determined. By 6 months of age, mean growth increments for the supplemented male infants were 2.1 cm greater in length (P less than 0.025) and 535 g greater in weight (P less than 0.05) than for male controls. Growth increments for female test and control infants did not differ significantly. Plasma zinc levels were, at 3 months of age, significantly higher for both male and female supplemented infants. By 6 months, only the male supplemented infants maintained significantly higherplasma zinc levels (P less than 0.025). The addition of zinc was associated with a lower incidence of disturbed gastrointestinal function (P less than 0.005) and not accompanied by any signs of toxicity.
一些婴儿配方奶粉的锌含量低于原牛奶。锌是生长所需的一种营养素，在这项双盲对照研究中，测定了在每升含铁的Similac奶粉中添加4毫克锌的效果。到6个月大时，添加锌的男婴平均身长增长比男性对照组多2.1厘米（P<0.025），体重多535克（P<0.05）。雌性试验组和对照组婴儿的生长增量没有显著差异。在3个月大时，添加锌的男婴和女婴的血浆锌水平均显著更高。到6个月时，只有添加锌的男婴维持了显著更高的血浆锌水平（P<0.025）。添加锌与胃肠道功能紊乱发生率较低相关（P<0.005），且未伴有任何毒性迹象。
