Abstract Sea trout (Salmo trutta m. trutta) is a species for which effective methods of rearing are still being developed. They need high-quality protein in their diet, but, considering the ecological consequences of fishmeal production, new sources of protein are needed. Presently, insect meal is one of the most promising alternative sources of protein in the diets of farm animals. Insect production does not result in excessive gas emissions, waste generation or the risk of obtaining low-quality dietary protein. The study on sea trout larvae was carried out for 60 days. Four diets were given to the fish: one control (C), without the inclusion of insect meal, and three experimental, with one unhydrolysed Tenebrio molitor meal (TM) and two hydrolysed Tenebrio molitor meal treatments. The effects of the diets were evaluated on the basis of growth performance (weight and length of the fish, SR, SGR, RGR, FCR and PER), somatic indices (HSI and VSI) and fish condition (CF). We observed that the highest body mass and weight gain were obtained in the control group. However, the lowest mortality and the highest values of RGR were observed only in groups fed diets containing mealworm meal. The results for the hepato- and viscerosomatic indices showed a lack of statistically significant differences between the control group and the unhydrolysed Tenebrio molitor meal group in terms of the enzymatic activities of amylase, lipase and trypsin in the fish intestine and both aminotransferases in the liver. Our study demonstrated that the inclusion of 20% mealworm meal in practical diets for sea trout did not negatively affect growth performance or gastrointestinal tract (GIT) enzyme activity. The hydrolysed mealworm meal and the non-processed mealworm meal had similar effects.

中文翻译：

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在海鳟幼虫饲养中加入黄粉虫粉的膳食：对鱼类生长性能、存活率、状况以及 GIT 和肝脏酶活性的影响

摘要 海鳟（Salmo trutta m. trutta）是一种仍在开发有效养殖方法的物种。他们的饮食中需要高质量的蛋白质，但考虑到鱼粉生产的生态后果，需要新的蛋白质来源。目前，昆虫粉是农场动物饮食中最有前途的蛋白质替代来源之一。昆虫生产不会导致过量的气体排放、废物产生或获得低质量膳食蛋白质的风险。对海鳟鱼幼虫的研究进行了 60 天。给鱼喂食四种饮食：一种对照 (C)，不含昆虫粉，三种实验，一种未水解的黄粉虫粉 (TM) 和两种水解的黄粉虫粉处理。根据生长性能（鱼的重量和长度、SR、SGR、RGR、FCR 和 PER）、体细胞指数（HSI 和 VSI）和鱼类状况（CF）评估饮食的影响。我们观察到，在对照组中获得了最高的体重和体重增加。然而，最低死亡率和最高 RGR 值仅在饲喂含粉虫粉的饮食组中观察到。肝和内脏指标的结果表明，就鱼肠中淀粉酶、脂肪酶和胰蛋白酶的酶活性以及肝脏中的两种氨基转移酶的酶活性而言，对照组和未水解黄粉虫膳食组之间没有统计学上的显着差异。我们的研究表明，在海鳟的实际日粮中加入 20% 粉虫粉不会对生长性能或胃肠道 (GIT) 酶活性产生负面影响。水解的黄粉虫粉和未加工的黄粉虫粉具有相似的效果。