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Title: Key nutritional factors and interactions during larval development of pikeperch (Sander lucioperca)
Authors: El Kertaoui, Najlae
Lund, Ivar
Assogba, Hospice
Dominguez, David 
Izquierdo, Marisol 
Baekelandt, Sebastien
Cornet, Valerie
Mandiki, Syaghalirwa N. M.
Montero, Daniel 
Kestemont, Patrick
UNESCO Clasification: 310502 Piscicultura
Keywords: Fatty-Acid-Composition
Salmon Salmo-Salar
Nonspecific Immune-Responses
Feeding Acipenser-Persicus
Seabream Sparus-Aurata, et al
Issue Date: 2019
Project: Exploring the biological and socio-economic potential of new/emerging candidate fish species for the expansion of the European aquaculture industry ItemCrisRefDisplayStrategy.project.deleted.icon
Journal: Scientific Reports 
Abstract: The effects of 8 nutritional variables (Ca/P, Eicosapentaenoic acid (20: 5n-3) + Docosahexaenoic acid (22: 6n-3) (EPA + DHA), Arachidonic acid (20: 4n-6) (ARA), Se, vitamins E, C, D and A) were investigated to identify their respective importance and interactions in pikeperch larval development. In this respect, two modalities (low and high levels) of each variable were tested through a fractional factorial experimental design allowing a reduction from 256 (2(8)) to 16 (2(8-4)) experimental units. Survival was significantly higher in larvae fed a high Ca/P diet while larval growth was significantly lower in larvae fed the same diet variant, associated with a higher incidence of kyphosis and pectoral anomalies in these larvae. Lordosis and scoliosis seemed to be mostly affected by dietary long chain polyunsaturated fatty acids (LC-PUFAs). A significant interaction was shown between n-3 LC-PUFA and vitamin C on jaw anomalies, while myocyte-specific enhancer factor 2C (mef2c) gene expression correlated positively with dietary vitamin C increment. Results also demonstrated an effect of the different nutrients and their interactions on the activity levels of digestive enzymatic activities. The results of the present study highlight the importance of the interactions between Ca/P, LC-PUFAs and vitamins C and E, suggesting their essential roles as key nutritional factors influencing pikeperch larval development.
ISSN: 2045-2322
DOI: 10.1038/s41598-019-43491-1
Source: Scientific Reports [ISSN 2045-2322], v. 9 (7074)
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