Two experiments were conducted to evaluate the suitability of corn DDGS as a protein source for European catfish (Silurus glanis). The first experiment consisted of an in vivo digestibility assessment to determine apparent digestibility coefficients for protein, lipid, phosphorus and amino acids available in DDGS. One hundred twenty juveniles (average weight, 154.29 ± 2.73 g) were distributed in recirculation water system equipped with six 1m³ fiberglass tanks (20 fish per tank), which were allotted to two experimental group in triplicates. Juveniles were fed either of the two diets, with or without DDGS (DDGS diet or reference diet) ad libitum till saturation 3 times per day for two weeks. Apparent digestibility coefficient of dry matter, crude protein, crude fat and phosphorus of DDGS ingredient for Europeean catfish were found 49.42 %, 73.39 %, 77.38 % and 87.98 % respectively. The second experiment was conducted for eight weeks to evaluate the effect of corn DDGS on growth, nutrient utilization and metabolism of European catfish. Two hundred forty juveniles of European catfish (average weight, 272.7 ± 37.8 g) were stocked in 1000 L glass fibre tanks in a recirculation system in triplicates. Juveniles were fed with either of the four iso-nitrogenous and iso-caloric (37 % crude protein and 6 % crude fat) experimental diets formulated with the inclusion of 0, 10, 20 and 30 % corn DDGS with partial replacement of soybean and wheat. No significant differences were found between the experimental groups regarding growth performance and plasma biochemical parameters. The liver histopathological observations showed that 20 and 30 % DDGS groups had less vacuolized hepatocytes than the other groups. Both experiments conclude that apparent digestibility of corn DDGS is auspicious for European catfish and 30 % DDGS can be included in the diet of European catfish without compromising the growth performance and nutrient utilization.

进行了两个实验，以评估玉米DDGS作为欧洲cat鱼（Silurus glanis）的蛋白质来源的适用性。第一个实验包括体内消化率评估，以确定DDGS中可用的蛋白质，脂质，磷和氨基酸的表观消化率系数。将一百二十只幼鱼（平均体重154.29±2.73 g）分配到配备有六个1m ³玻璃纤维水箱（每个水箱20条鱼）的循环水系统中，一式三份分配给两个实验组。随意喂养两种饮食中的未成年人，不论是否添加DDGS（DDGS饮食或参考饮食）直到饱和，每天3次，持续两周。发现欧洲cat鱼的干物质，DDGS成分的干物质，粗蛋白，粗脂肪和磷的表观消化系数分别为49.42％，73.39％，77.38％和87.98％。第二个实验进行了八周，以评估玉米DDGS对欧洲cat鱼生长，养分利用和代谢的影响。将三百四十只欧洲cat鱼（平均体重272.7±37.8克）放到循环系统中的1000升玻璃纤维罐中，一式三份。给少年喂饲四种等氮和等热量（37％的粗蛋白和6％的粗脂肪）实验日粮，配方中分别添加了0％，10％，20％和30％的玉米DDGS，部分替代了大豆和小麦。实验组之间在生长性能和血浆生化参数方面没有发现显着差异。肝脏组织病理学观察显示，与其他组相比，20％和30％DDGS组的空化肝细胞少。两项实验均得出结论，欧洲鱼玉米的表观消化率是吉利的，欧洲cat鱼的饮食中可包含30％DDGS，而不会损害其生长性能和养分利用率。