Sim J S, Kitts W D, Bragg D B
Poult Sci. 1980 Feb;59(2):325-7. doi: 10.3382/ps.0590325.
The influence of dietary lipid factors (saturated and unsaturated oil, cholesterol, and plant sterols) upon the fecal neutral and acidic sterol excretion in the laying hen were investigated during a nine-week experimental period. Single Comb White Leghorn laying hens at thirty weeks of age were fed two basal diets containing 8.0% hydrogenated coconut oil or safflower oil, with or without supplementing 1.0% cholesterol, 2.0% soysterols, or combination of cholesterol and soysterols with each oil treatment. Feeding safflower oil increased the fecal excretion of bile acids and, to a lesser extent, catabolic neutral sterols as compared to hydrogenated coconut oil. The fecal excretion of sterol metabolites was further enhanced when soysterols and cholesterol were fed simultaneously. When soysterols were fed alone, endogenous cholesterol excretion in feces appeared to increase, but soysterol feeding with cholesterol did not retard the apparent absorption rate of cholesterol.
在为期九周的实验期内，研究了日粮脂质因素（饱和与不饱和油、胆固醇和植物甾醇）对蛋鸡粪便中性和酸性甾醇排泄的影响。选用30周龄的单冠白来航蛋鸡，给其饲喂两种基础日粮，分别含有8.0%的氢化椰子油或红花油，每种油处理组再分别添加或不添加1.0%胆固醇、2.0%大豆甾醇，或胆固醇与大豆甾醇的组合。与氢化椰子油相比，饲喂红花油可增加胆汁酸的粪便排泄量，并在较小程度上增加分解代谢中性甾醇的排泄量。同时饲喂大豆甾醇和胆固醇时，甾醇代谢产物的粪便排泄量进一步增加。单独饲喂大豆甾醇时，粪便中内源性胆固醇排泄量似乎增加，但大豆甾醇与胆固醇一起饲喂并不降低胆固醇的表观吸收率。
