Insect meals are a group of promising feed materials and sources of nutrients. Their production does not entail deforestation, global warming, environmental pollution or decreased biodiversity. One of the most important farmed insect species is mealworm, which is allowed to be used in aquafeeds by the European Commission Regulation no. 2017/893. The aim of this study was to examine four doses of mealworm meal (TM₁₀ = 10%, TM₂₀ = 20%, TM₃₀ = 30% and TM₄₀ = 40%) in sea trout (Salmo trutta m. trutta) fingerling diets and their effects on growth performance, somatic and condition indices, blood parameters, histomorphological characteristics and body composition. Our results showed the most satisfactory growth performance results with 10% mealworm meal. The feed conversion ratio (FCR), protein efficiency ratio (PER), relative growth rate (RGR) and specific growth rate (SGR) was similar in the control and TM₁₀ group. The lowest fish survival (95%) was occurred in the group of fish fed TM₄₀, and the highest (98.33%) in fish fed control or TM₁₀ diets. The fish condition and the hepatosomatic index were similar among treatments. The histomorphological structures of the intestine and liver were not negatively affected by the experimental diets. The inclusion of up to 40% mealworm meal did not negatively affect growth performance, feed utilization, fish health or survival.

中文翻译：

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在海鳟（Salmo trutta m. trutta, L.）鱼种饲料中使用粉虫粉：对生长性能、胃肠道组织形态学和血液参数的影响

昆虫粉是一组很有前途的饲料原料和营养来源。它们的生产不会导致森林砍伐、全球变暖、环境污染或生物多样性减少。最重要的养殖昆虫种类之一是粉虫，欧盟委员会第 1 号法规允许将其用于水产饲料。2017/893。本研究的目的是检查四个剂量黄粉虫粗粉（TM的₁₀  = 10％，TM ₂₀  = 20％，TM ₃₀  = 30％和TM ₄₀  = 40％）在海鳟（褐鳟米。鳟) 鱼种饲料及其对生长性能、体细胞和体况指数、血液参数、组织形态学特征和身体成分的影响。我们的结果表明，10% 粉虫粉的生长性能结果最令人满意。饲料转化率 (FCR)、蛋白质效率比 (PER)、相对生长率 (RGR) 和比生长率 (SGR) 在对照 组和 TM ₁₀组中相似。鱼的存活率最低 (95%) 出现在饲喂 TM ₄₀的鱼组中，最高 (98.33%) 出现在饲喂对照或 TM _{10 的}鱼组中饮食。各处理间鱼的状况和肝体指数相似。肠道和肝脏的组织形态结构不受实验饮食的负面影响。包含高达 40% 的粉虫粉不会对生长性能、饲料利用率、鱼类健康或存活产生负面影响。