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本研究采用动物代谢实验方法研究课间餐食品的营养价值．实验动物随机分为4组，每组12只，雌雄各半．A组：喂养普通面包；B组：喂养面包，C组；喂养蛋糕；D组：喂养脆饼．另设一无氮膳组．各组大白鼠均单笼饲养，自由进食进水．记录进食量，收集粪尿．实验进行30天．结果表明，体重、食饲效率和股骨拉断强度等指标值B、C、D组均显著地高于A组；热能效率．血红蛋白水平等指标值B组显著地高于A组．结论为年幼机体进食课间食品能促进生长发育、防治缺铁性贫血、提高蛋白质消化率和增强骨质，进而增强学生体质。
In this study, animal experiments were conducted to study the nutritive value of meal foods. Experimental animals were randomly divided into 4 groups, 12 in each group, male and female. Group A: fed ordinary bread; Group B: fed bread, Group C; fed cakes; Group D: fed shortbread. Another set of nitrogen-free diet group. Rats in each group were housed in a cage, free to eat water. Record food intake, collect urine. Experiment for 30 days. The results showed that body weight, feeding efficiency and tensile strength of femur were significantly higher in group B, C and D than those in group A; thermal efficiency. Index value of hemoglobin B group was significantly higher than that of A group. Conclusion It is suggested that feeding young food for inter-school food can promote growth and development, prevent and treat iron-deficiency anemia, improve protein digestibility, increase bone mass and enhance students’ physique.