【摘要】 <正> 以往会有许多作者发现,当核黄素缺乏时,动物体重增加速度减缓,但食欲不受影响,因而认为核黄素缺乏可以影响食物的利用率。Sure的试验证明在进食量相等时,缺乏核黄素鼠的体重增加速度为不缺乏者的十分之一。Mannering及Elvehjem发现更多还原

【Abstract】 Weaning rats were divided into three groups. The first group were fed on a synthetic diet deficient in riboflavin. The second group were fed on the same diet but supplemented with riboflavin, and the quantity of the ration was limited to that of the paired animal in the first group. The third group were also on the riboflavin supplemented diet, but fed ad libitum.It was found that anorexia rapidly developed in the deficient animals and thus caused retardation of growth. However, the appetite was quickly restored as soon as riboflavin was supplied. From the results obtained with the pair feeding method, the growth of the deficient animal is somewhat less than the paired control.There was no effect of riboflavin deficiency on nitrogen equilibrium of the rats and on storage of protein in the liver. There was a slight decrease of ammonia nitrogen excretion in the urine during riboflavin deficiency. Slight increase of urinary amino nitrogen was observed only in the early stage of deficiency.更多还原