Hung S S
Department of Animal Science, University of California, Davis 95616.
J Nutr. 1991 Oct;121(10):1600-5. doi: 10.1093/jn/121.10.1600.
Oral carbohydrate administration tests were used to gain more insight into the ability of white sturgeon (Acipenser transmontanus) to utilize different carbohydrates. Nine carbohydrates in gelatin capsules were administered orally after the sturgeon were fasted for 48 h. Blood was sampled at selected time intervals from 2 to 72 h thereafter. Maximum plasma glucose concentration in the glucose-fed sturgeon was significantly higher (P less than 0.05) than in the maltose-fed sturgeon, which in turn was higher than in sturgeon fed the other carbohydrates. Maximum plasma glucose concentrations in the sturgeon fed fructose, galactose, sucrose, lactose, dextrin, raw cornstarch or cellulose were not significantly different. New findings in this study include the following: 1) plasma glucose concentrations in the glucose- or maltose-fed sturgeon were higher than the other animals under similar conditions; 2) the pattern of plasma galactose and glucose concentrations was similar in sturgeon after they were fed galactose and glucose, respectively, except that the maximum plasma galactose concentration was observed 8 h later than the maximum plasma glucose concentration; and 3) a small amount of the same disaccharide was detected in the plasma of sturgeon 4 to 20 h after they were fed the disaccharides.
口服碳水化合物给药试验用于更深入了解白鲟（Acipenser transmontanus）利用不同碳水化合物的能力。在白鲟禁食48小时后，将装在明胶胶囊中的九种碳水化合物口服给药。此后在2至72小时的选定时间间隔采集血液样本。喂食葡萄糖的白鲟的最大血浆葡萄糖浓度显著高于（P小于0.05）喂食麦芽糖的白鲟，而喂食麦芽糖的白鲟又高于喂食其他碳水化合物的白鲟。喂食果糖、半乳糖、蔗糖、乳糖、糊精、生玉米淀粉或纤维素的白鲟的最大血浆葡萄糖浓度没有显著差异。本研究的新发现包括：1）在类似条件下，喂食葡萄糖或麦芽糖的白鲟的血浆葡萄糖浓度高于其他动物；2）分别喂食半乳糖和葡萄糖后，白鲟血浆中半乳糖和葡萄糖浓度的变化模式相似，只是最大血浆半乳糖浓度比最大血浆葡萄糖浓度晚8小时出现；3）在喂食二糖后4至20小时的白鲟血浆中检测到少量相同的二糖。
