婴儿添加辅食与微量元素铁、锌关系的研究

目的探讨添加辅食与婴儿体内微量元素Fe、Zn含量的关系。方法将2009年10月~2011年10月来自我院儿保门诊的1 000例4月龄婴儿随机分为两组,观察组规律添加辅食,对照组无添加或不规律添加辅食,动态取耳血测量微量元素Fe、Zn含量进行对比分析。结果婴儿4月龄时观察组与对照组微量元素Fe、Zn含量无明显区别（P〉0.05）,9月龄观察组婴儿体内微量元素Fe含量（488.4±12.7）μmol/L,Zn含量（6.9±0.6）μmol/L,明显高于对照组（P〈0.05）,12个月龄观察组婴儿体内微量元素Fe含量（556.3±20.3）μmol/L,Zn含量（7.0±0.4）μmol/L,均明显高于对照组,差异有统计学意义（P〈0.05）。结论在婴儿4月龄后,按时规律添加辅食无论对母乳喂养还是人工喂养的婴儿都有必要。

Study on the relationship between complementary feeding and content of trace elements Fe and Zn in infants

Objective To discuss the relationship between complementary feeding and concentration of trace elements Fe and Zn in infants.Methods 1 000 cases of 4 months old baby from our hospital child health care from October 2009 to October 2011 were randomly divided into experimental group(n = 500) and control group(n = 500).Experimental group were complementary feeding regularly,the control group with non complementary or irregularly feeding the concentration of Fe and Zn were measured actively.Results At 4 months old,the concentration of Fe or Zn were not significantly different(P > 0.05).At 9 month old,the concentration of Fe in experimental group was(488.4±12.7) μmol/L(P < 0.05),and Zn was(6.9±0.6) μmol/L(P < 0.05),At 12 month old,the concentration of Fe in experimental group was(556.3±20.3) μmol/L(P < 0.05),and Zn was(7.0±0.4) μmol/L(P < 0.05),they were significantly higher than control group.Conclusion Complementary feeding to infants after 4 month old are necessarily.