To characterize the effects of a defatted superworm meal (SWM) on the zootechnical performance and nutrient utilization of fingerling rainbow trout, we provided five practical diets with 0 (control), 10, 20, 30 and 40% SWM to substitute fishmeal. Fingerlings (N = 225; 9.9 Â± 0.5 g) were randomly allocated over five treatments in triplicate. After eight weeks, the replacement of fishmeal with SWM up to 110 g/kg did not induce significant variations in the final weight and weight gain rate compared to the control group, while dietary 220 g/kg SWM had negative impacts on the growth and feed utilization attributes. The contents of protein and methionine were significantly reduced in the whole body with incremental dietary SWM. The pepsin and chymotrypsin activities were not influenced in the groups, but the lowest trypsin activity was seen in 40% replacement by SWM (p < .05). Total carotenoid content and redness of the fillet were improved with dietary SWM. No variation was seen in the digestibility of protein and dry matter in diets including 55 g/kg and 110 g/kg SWM compared to the control group (p > .05). Overall, optimum fishmeal replacement by SWM ranged from 162.6 to 184.2 g/kg in rainbow trout diet based on the broken-line regression model.

中文翻译：

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超级蠕虫、Zophobas morio、膳食作为虹鳟鱼种、Oncorhynchus mykiss 部分鱼粉替代品的可行性，饲料：生长性能、氨基酸谱、蛋白水解酶活性和色素沉着

为了表征脱脂超级蠕虫粉 (SWM) 对虹鳟鱼种的畜牧业性能和营养利用的影响，我们提供了五种实用的饲料，其中含有 0（对照）、10、20、30 和 40% SWM 来替代鱼粉。鱼种 ( N = 225; 9.9 ± 0.5 g) 随机分配超过五个治疗一式三份。八周后，与对照组相比，用高达 110 g/kg 的 SWM 替代鱼粉不会引起最终体重和增重率的显着变化，而日粮 220 g/kg SWM 对生长和饲料产生负面影响利用属性。随着日粮 SWM 的增加，全身蛋白质和蛋氨酸的含量显着降低。各组胃蛋白酶和胰凝乳蛋白酶活性未受影响，但在 40% 的 SWM 替代中，胰蛋白酶活性最低（p < .05）。膳食 SWM 改善了总类胡萝卜素含量和鱼片的红度。与对照组相比，包括 55 g/kg 和 110 g/kg SWM 的日粮中蛋白质和干物质的消化率没有变化 ( p  > .05)。总体而言，基于折线回归模型，虹鳟日粮中 SWM 替代鱼粉的最佳范围为 162.6 至 184.2 g/kg。