婴儿高蛋白营养米粉动物实验研究

THE EXPERIMENTAL STUDY OF HIGH-PROTEIN INFANT CEREAL

本实验是以大米粉为主,混合适量全脂奶粉,全脂米胚芽、干酵母,并强化碳酸钙和乳酸亚铁研制一种营养成分合理、能促进婴儿生长发育、预防缺铁性贫血和佝偻病且价格便宜的婴儿辅助食品。动物实验结果表明,实验组(A组)大鼠的增重与对照Ⅰ(B组)无显著差异(P>0.05),但平均增重超过B组(对照Ⅰ)9g左右,与对照Ⅱ(C组)比较增重平均超过60g,有极显著差异(P<0.01)。FE、CE及PER的统计结果与增重一致,且实验组无贫血和脱钙现象。氮代谢试验结果表明,实验组AO、TD、BV及NPU分别为97.47％、98.08％、85.73％和84.09％,B纽分别为97.29％、97.81％、87.51％和85.59％,两组无统计学差异;肝氮、体氮含量及体氮回复也均无显著差异,都达正氮平衡。

This infant cereal chiefly consisted of rice meal, fullfat milk powder, rice germ and dried yeast, and fortified with ferrous lactate and calcium carbonate. This mixture contained 14.1% protein, 8.6% fat, 64.3% carbohydrate, 750mg% calcium, 10mg% iron, 1.0mg% zinc and proper amount of various kinds of vitamins.1. Growth test; 84 weaning SD rats were randomly divided into 6 groups:(A) Infant cereal group;(B) Control I; (C) Control II; (A') Infant cereal group; (B') Control I; (D) Casein group. The latter three groups contained 10% protein which were designed for calculating PER. All these different preparations were fed to 6 groups for 4 weeks. The results showed that the body weight gain, the FE, CE and PER were not significantly different between group A and B but there were significant difference between group A and C. The Hb was increased from 11.76g% ( ) and 11.46g%() to 14.30g% and 14.46g% respectively in group A. The bones developed well and no decalcification occured.2.Nitrogen balance test:(A). Infant cereal group; (B) Control I. The results indicated that the TD, BV and NPU of group A were 98.08%, 85.73% and 84.09% and of group B were 97.81%, 87.51% and 85.59% respectively. Both groups obtained the results of positive nitrogen balance, no significant statistical difference. The contents of hepatic and body nitrogen of two groups were also not significantly different.These data demonstrate that this infant cereal is able to promote the growth of weanling rats, to retain positive body nitrogen and to prevent the occurrence of anemia and rickets.