本实验观察了饲料中蛋白质的水平不同、来源不同,以及蛋白质-热量营养不良对大鼠肝脏维生素A的贮存和运转的影响。当饲料中酪蛋白量减少到6％时,或者虽然酪蛋白的比例为20％,但限制其摄食量仅为正常的一半时,大鼠体重的增长受到了严重影响,维生素A的吸收率也有所下降,血液中维生素A的水平也比正常组低。一次灌胃维生素A132μg后3.5小时, This experiment examined the effects of different protein levels, sources, and protein-calorie malnutrition on the storage and administration of vitamin A in rat liver. When the amount of casein in the feed is reduced to 6%, or although the casein ratio is 20%, the increase in body weight of the rat is severely impaired when the feed intake is limited to only half normal, and the absorption rate of vitamin A is also The level of vitamin A in the blood is also lower than that in the normal group. 3.5 hours after intragastric administration of vitamin A132 μg,