Abstract

This article discusses work on assessing the digestibility of a concentrate of Hermetia illucens larvae in fish with gastrointestinal digestion (rainbow trout Oncorhynchus mykiss, Russian sturgeon Acipenser gueldenstaedtii, red tilapia Oreochromis mosambicus × O. niloticus). It was found that this digestibility index of the larvae concentrate was 67–74%. At the same time, fish species consumed larvae protein at 91–97%, the digestibility of residual fat was 90–94%, and easily hydrolyzed carbohydrates amounted to 52–68%. Сhitin of H. illucens was digested 25–35% and did not adversely affect the digestion of protein and fat in the fish species studied. The digestion rates of the H. illucens larvae concentrate, protein, and easily digestible carbohydrates in O. mosambicus × O. niloticus are statistically significantly higher than in Onc. mykiss, while in A. gueldenstaedtii they were intermediate in comparison with tilapia and trout. This corresponded to the duration of food passage through the intestinal tract, which in O. mosambicus × O. niloticus, Ac. gueldenstaedtii, and O. mykiss came to 7.8, 9.6, and 15.7 hours, respectively. Fat and chitin were digested by red trout significantly more efficiently than other fish species. This corresponded to the duration of food passage through the intestinal tract, which for tilapia, sturgeon, and trout came to 7.8, 9.6, and 15.7 hours, respectively. The degree of digestibility of fat and chitin by trout was significantly higher than that of other fish species.

中文翻译：

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鱼饲料中浓缩的Hermetia illucens幼虫的营养价值的生理基础

摘要

本文讨论了通过肠胃消化评估鱼中Hermetia illucens幼虫的浓缩液（虹鳟Oncorhynchus mykiss，俄罗斯Russian鱼Acipenser gueldenstaedtii，红罗非鱼Oreochromis mosambicus × O. niloticus）的消化率的工作。发现幼虫浓缩液的消化率是67-74％。同时，鱼类消耗的幼虫蛋白为91–97％，残留脂肪的消化率为90–94％，易水解的碳水化合物为52–68％。illucens的hitin被消化了25–35％，并且对所研究的鱼类中的蛋白质和脂肪的消化没有不利影响。的消化率H. illucens幼虫浓缩物，蛋白质和易消化的碳水化合物在O. mosambicus ×尼罗罗非鱼在统计学上比在显著更高ONC。mykiss，而在A. gueldenstaedtii中，它们与罗非鱼和鳟鱼相比处于中等水平。这对应于食物通过肠道的持续时间，在莫桑比克酵母×尼罗罗非鱼中，Ac。gueldenstaedtii和O. mykiss分别为7.8、9.6和15.7小时。红鳟鱼比其他鱼类更有效地消化了脂肪和几丁质。这对应于食物通过肠道的持续时间，罗非鱼，st鱼和鳟鱼分别达到7.8、9.6和15.7小时。鳟鱼对脂肪和几丁质的消化率明显高于其他鱼类。