学生课间餐食品营养价值动物实验研究

Study on Nutritive Value of Middle School Students Food during Break

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。

Nutritive value of middle school students food during break was studied by animal metabolism experiment. Forty-eight rats were randomly divided into 4 group. control group (A) was fed ordinary bread. and experiment groups (B. CandD) were given three kinds of middle school students food for 30 days. The results showed that experiment groups were superior to control group in body weight, feed efficiency. energy efficiency. hemoglobin concentration. and strength of femur. It was concluded that student food during break was valid for the improvement of growth and development. and the prevention and treatment of iron-deficient anemia and calcium deficiency.