Fishmeal Dietary Replacement Up to 50%: A Comparative Study of Two Insect Meals for Rainbow Trout (Oncorhynchus mykiss)

Animals

Federico Melenchón¹  Eduardo de Mercado¹  Cristina Tomás-Almenar¹  Leidy Lagos²  Pabodha Weththasinghe²  Fernando G. Barroso³  Dmitri Fabrikov³  Gabriel Cardenete⁴  Héctor J. Pula⁴  Helena M. Lourenço⁵  María-Fernanda Pessoa⁶  Marcos Cortés⁷ 

[1] Agro-Technological Institute of Castilla y León, Ctra. Arévalo s/n, 40196 Segovia, Spain;Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432 Ås, Norway;Department of Biology and Geology, University of Almería, 04120 Almería, Spain;Department of Zoology, Campus Fuentenueva, Facultad de Ciencias, University of Granada, 18071 Granada, Spain;Division of Aquaculture, Valorisation and Bioprospection, Portuguese Institute for Sea and Atmosphere (IPMA, IP), Av. Dr. Alfredo Magalhães Ramalho 6, 1495-165 Algés, Portugal;GeoBioTec, Departamento de Ciências da Terra, Faculdade de Ciências e Tecnologia, Nova School, 2829-516 Monte da Caparica, Portugal;Laboratory of Immunology, Centre of Aquatic Biotechnology, Department of Biology, Faculty of Chemistry and Biology, University of Santiago of Chile, Av. Bernardo O’Higgins 3363, Santiago 9170002, Chile;

关键词: black soldier fly;    mealworm;    fishmeal replacement;    rainbow trout;    aquaculture;    fish nutrition;   

DOI  :  10.3390/ani12020179

来源: DOAJ

【 摘 要 】

The demand of optimal protein for human consumption is growing. The Food and Agriculture Organization (FAO) has highlighted aquaculture as one of the most promising alternatives for this protein supply gap due to the high efficiency of fish growth. However, aquaculture has been facing its own sustainability problem, because its high demand for protein has been traditionally satisfied with the use of fishmeal (FM) as the main source. Some of the most promising and sustainable protein substitutes for FM come from insects. The present manuscript provides insight into an experiment carried out on rainbow trout (Oncorhynchus mykiss) with a 50% replacement of FM with different larvae insect meals: Hermetia illucens (HI), and Tenebrio molitor (TM). TM showed better results for growth, protein utilization and more active digestive function, supported by intestinal histological changes. Liver histology and intermediary metabolism did not show relevant changes between insect meals, while other parameters such as antioxidant enzyme activities and tissue damage indicators showed the potential of insect meals as functional ingredients.

【 授权许可】

Unknown