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本文比较了母乳和牛乳两种不同喂养方式的1～3月龄婴儿的血清锌铜含量。86名成都市区婴儿(1～3月)经配对后分为母乳喂养组和牛乳喂养组。两组婴儿生后一直采用同一种方式喂养。结果母乳组婴儿血清锌含量为15.47±3.95μmol/L,血清铜为17.27±6.36μmol/L。牛乳组血清锌为13.57±4.21μmol/L,明显低于母乳组(P<0.05);血清铜为17.21±6.20μmol/L,与母乳组差异无显著性(P>0.05)。母乳组锌摄入量(mg/d)从1～3月分别为2.35±0.71,1.47±0.61,0.86±0.17,均低于牛乳组(3.82±1.22);母乳组铜摄入量(mg/d)从1～3月分别为0.29±0.11,0.18±0.07,0.15±0.04均高于牛乳组(0.10±0.07)。两组婴儿的血清锌铜含量与乳汁锌铜摄入量间无相关性。结果提示:婴儿早期的锌营养状况与喂养方式有关。母乳喂养儿的锌营养状况优于牛乳喂养儿,可能与母乳锌的生物利用度较好有关。而婴儿早期的铜营养状况与喂养方式关系不大,可能主要依赖于体内的铜储存量及其动用。
This article compares serum zinc and copper levels in infants aged 1 to 3 months who are breastfed and milk fed in two different ways. Eighty-six infants from Chengdu (January to March) were paired and divided into breastfeeding group and milk feeding group. Two groups of infants have been feeding the same way after birth. Results In the breast milk group, serum zinc level was 15.47 ± 3.95μmol / L and serum copper level was 17.27 ± 6.36μmol / L. The level of serum zinc in cow milk group was 13.57 ± 4.21μmol / L, which was significantly lower than that in breast milk group (P <0.05). The serum copper level was 17.21 ± 6.20μmol / L. There was no significant difference between the two groups (P> 0.05). The intake of zinc in breast milk group was 2.35 ± 0.71, 1.47 ± 0.61 and 0.86 ± 0.17 respectively from January to March, which was lower than that of milk group (3.82 ± 1.22). The intake of copper in breast milk group (mg / d) from January to March were 0.29 ± 0.11,0.18 ± 0.07,0.15 ± 0.04 were higher than the milk group (0.10 ± 0.07). There was no correlation between serum zinc-copper level and milk zinc-copper intake in both groups. The results suggest that: early infant zinc nutrition and feeding patterns. The nutritional status of zinc in breastfeeding children is better than that of milk feeding children, which may be related to the bioavailability of zinc in breast milk. The infant’s early nutritional status of copper and feeding has little to do, may depend mainly on the body’s copper storage and its use.