城乡居民母乳中微量元素与婴儿生长发育

The difference of the trace element contents of lactation breast milk and growth development of their breast-fed infants between city and ru-ral area

研究目的探讨城乡乳母不同哺乳期乳中锌、铜、铁、硒含量差异和城乡婴儿生长发育的差异。研究背景城乡文化水平、生活习惯不同,影响着母乳中的营养成分和婴儿生长发育,为了指导乳母合理膳食,加强婴儿保健,我们进行了本研完。研究方法采集14例县城和13例农村乳母不同乳期的乳样,热消化后,用WYX-402型原子吸收分光光度计测定锌、铜、铁,用RF-540荧光分光光度计测定硒,根据标准曲线和稀释倍数计算乳样中微量元素的含量。研究结果城乡母乳中锌、铜、铁都随着哺乳期延长而下降,但下降速率不同,与生活习惯有关,硒比较稳定。3个月时农村锌、铜与县城比差异显著。城乡婴儿生长发育无显著性差异,但除10个月时农村婴儿身高高于县城外,其余都是县城高于农村。结论影响婴儿生长发育的因素很多,除考虑微量元素外,也要考虑其它影响因素和环境,城乡不同的生活水平和习惯影响母扎微量元素的变化。

purpose of this study was toinvestigate the possibl.、different of Zn,Cu,Fe,Se.Contents of breast milk in lactation period between city and rural area,and to observe the ef-fects of trace elements contents on the growgh de—velopment of their breastied infants. Background Tile different culture,customsbetween city and rural area can affect the nutritionof breast milk and infants growth,we perlbrmedthis study as to instruct the lactating mothers howtO eat reasonable and strengthen health tbr theil’infant. Methods The milk of 14 cities and i 3 ruralslactating mothm‘S was collected.Through heal di·gesting the Zn.Cu and Fe were measured with a c—om abosorption spectrum.the Se was measuredwith RF-540 flurimeter. Results The contents of Zn,Cu and Fe inbreast milk were decreased along the lactatic peri—od,but the rate is different between city and ruralarea,which is related with the customs.’The con—tent of Se was constant.there was no significantdifference on infant growth between city and ruralarea. Conclusion There are many factor influencing the growth of infants.It was suggested thatwhen you meet an infant whose growth is bad,you should consider the Iack of trace element at thesame time excluding the probability of lackingthree majn BUtrientS and Vitamjn