Fleming B B, Barrows C H
Exp Gerontol. 1982;17(2):115-20. doi: 10.1016/0531-5565(82)90044-4.
The absorption of vitamins A and D was examined in 6, 12, and 24 months old female Wistar rats. Animals were dosed by stomach tube with radioactive forms of vitamins A and D and killed 18 hours later. Isotope in feces collected during this time and isotope remaining in the gastrointestinal tract were determined and subtracted from total dose to determine percentage of absorption. Under the conditions of this study, age had no significant effect on the absorption of vitamins A and D.
对6个月、12个月和24个月大的雌性Wistar大鼠进行了维生素A和D吸收情况的研究。通过胃管给动物投喂放射性形式的维生素A和D，18小时后将其处死。测定这段时间内收集的粪便中的同位素以及胃肠道中残留的同位素，并从总剂量中减去这些值，以确定吸收百分比。在本研究条件下，年龄对维生素A和D的吸收没有显著影响。
