Brauge C, Corraze G, Médale F
Laboratoire de nutrition des poissons, unité mixte INFRA-IFREMER, station d'hydrobiologie INRA, Saint-Pée-sur-Nivelle, France.
Reprod Nutr Dev. 1995;35(3):277-90. doi: 10.1051/rnd:19950304.
Trout reared at 8 or 18 degrees C were fed twice a day almost to satiation with 1 of 3 experimental diets. The diets were formulated to contain the same levels of protein (43%, dry matter (DM) basis) and digestible energy (around 15 kJ/g DM), but different carbohydrate/lipid ratios 30:7 to 23:14). Time-course studies of nitrogen excretion and glycaemia were also carried out. After 12 weeks of feeding, growth, protein retention and body composition were not influenced by the dietary treatment in trout reared at 8 degrees C. At 18 degrees C, the protein retention was not affected by dietary treatment, but the weight gain tended to be higher in trout fed the diet with the lowest carbohydrate/lipid ratio. This result was due to higher body lipid deposition in these trout. Nitrogen excretion was not influenced by dietary treatment, but was higher at 18 degrees C than at 8 degrees C because of a higher feed intake. Glycaemia increased with dietary level of digestible carbohydrate and the highest plasma glucose level was attained later at 8 degrees C in comparison to 18 degrees C.
在8摄氏度或18摄氏度养殖的虹鳟鱼，每天投喂两次，几乎喂到饱足，投喂三种实验饲料中的一种。这些饲料被配制为含有相同水平的蛋白质（以干物质计43%）和可消化能量（约15千焦/克干物质），但碳水化合物/脂质比例不同（30:7至23:14）。还进行了氮排泄和血糖的时间进程研究。在8摄氏度养殖的虹鳟鱼中，经过12周的投喂后，生长、蛋白质保留和身体组成不受饲料处理的影响。在18摄氏度时，蛋白质保留不受饲料处理的影响，但投喂碳水化合物/脂质比例最低饲料的虹鳟鱼体重增加倾向于更高。这一结果是由于这些虹鳟鱼体内脂质沉积更高。氮排泄不受饲料处理的影响，但由于采食量更高，18摄氏度时的氮排泄高于8摄氏度时。血糖随可消化碳水化合物的日粮水平升高，与18摄氏度相比，8摄氏度时血浆葡萄糖水平达到最高的时间更晚。
