Performance, blood and histological parameters and gene expression of lipogenic markers in tilapia (Oreochromis niloticus) fed Tenebrio molitor larvae meal

IF 4.7 3区农林科学 Q1 ENTOMOLOGY

Journal of Insects as Food and Feed Pub Date : 2023-09-07 DOI:10.1163/23524588-20230063

L.J.F. Soares, G.O. Ribeiro, D.F. Freitas, E.R. Madureira, F.S. Aiura, M.P. Maciel, J. Nascimento, A.G. Ribeiro, S.H.S. Santos, D.V. Costa

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Abstract

The objective of the present study was to evaluate different inclusion levels of mealworm (Tenebrio molitor) larvae meal in the diet of Nile tilapia (Oreochromis niloticus). Two hundred male Tilapia juveniles were distributed in a completely randomized design (CRD) with five treatments (0%, 6.5%, 13%, 19.5% and 26% mealworm larvae meal) and four repetitions (polyethylene tanks), with 10 animals each. Productive performance, blood, histological and molecular parameters and viscerosomatic and hepatosomatic indices were evaluated. Among the evaluated parameters, final biomass, biomass gain, final weight, weight gain and apparent feed consumption were influenced by the inclusion of mealworm larvae meal in the feeds; the best results were obtained with an inclusion level of 26%. The tilapia fed with mealworm larvae meal showed higher body and fillet weights and larger muscle fibres. In addition, they presented similar values of biochemical components compared to animals fed the standard diet. Lipogenic genes were significantly higher expressed in groups fed mealworm larvae meal. In view of the findings, the inclusion of mealworm larvae meal in the diet of Nile tilapia is a viable approach, and inclusion levels of up to 26% of replacement of digestible protein have no negative impacts on the analysed parameters.

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罗非鱼（Oreochromis niloticus）的性能、血液和组织学参数以及脂肪生成标记的基因表达

本研究的目的是评估尼罗罗非鱼（Oreochromis niloticus）日粮中黄粉虫（Tenebrio molitor）幼虫粉的不同添加量。200 尾雄性罗非鱼幼鱼被分配在一个完全随机设计（CRD）中，五个处理（0%、6.5%、13%、19.5% 和 26%黄粉虫幼虫粉），四个重复（聚乙烯水槽），每个重复 10 尾。对生产性能、血液、组织学和分子参数以及粘液和肝脏指数进行了评估。在评估的参数中，最终生物量、生物量增重、最终体重、增重和表观饲料消耗量受饲料中黄粉虫幼虫粉添加量的影响；添加量为 26% 时效果最好。用黄粉虫幼虫粉喂养的罗非鱼显示出更高的体重和鱼片重量以及更大的肌肉纤维。此外，它们的生化成分值与饲喂标准饲料的动物相似。在喂食黄粉虫幼虫粉的组别中，脂肪生成基因的表达量明显较高。鉴于上述研究结果，在尼罗罗非鱼日粮中添加黄粉虫幼虫粉是一种可行的方法，添加量最高可达可消化蛋白质替代量的 26%，不会对分析参数产生负面影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Insects as Food and Feed Agricultural and Biological Sciences-Insect Science

CiteScore

7.00

自引率

17.60%

发文量

133

期刊介绍： The Journal of Insects as Food and Feed covers edible insects from harvesting in the wild through to industrial scale production. It publishes contributions to understanding the ecology and biology of edible insects and the factors that determine their abundance, the importance of food insects in people’s livelihoods, the value of ethno-entomological knowledge, and the role of technology transfer to assist people to utilise traditional knowledge to improve the value of insect foods in their lives. The journal aims to cover the whole chain of insect collecting or rearing to marketing edible insect products, including the development of sustainable technology, such as automation processes at affordable costs, detection, identification and mitigating of microbial contaminants, development of protocols for quality control, processing methodologies and how they affect digestibility and nutritional composition of insects, and the potential of insects to transform low value organic wastes into high protein products. At the end of the edible insect food or feed chain, marketing issues, consumer acceptance, regulation and legislation pose new research challenges. Food safety and legislation are intimately related. Consumer attitude is strongly dependent on the perceived safety. Microbial safety, toxicity due to chemical contaminants, and allergies are important issues in safety of insects as food and feed. Innovative contributions that address the multitude of aspects relevant for the utilisation of insects in increasing food and feed quality, safety and security are welcomed.