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Title: Parental LC-PUFA biosynthesis capacity and nutritional intervention with alpha-linolenic acid affect performance of Sparus aurata progeny
Authors: Turkmen, Serhat
Zamorano, Maria J. 
Xu, Hanlin 
Fernández-Palacios, Hipólito 
Robaina, Lidia 
Kaushik, Sadasivam
Izquierdo, Marisol 
UNESCO Clasification: 310502 Piscicultura
Keywords: Aquaculture
Fatty Acid Desaturase
Long-Chain Polyunsaturated Fatty Acids, et al
Issue Date: 2020
Project: Consumer driven Production: Integrating Innovative Approaches for Competitive and Sustainable Performance across the Mediterranean Aquaculture Value Chain 
Journal: Journal of Experimental Biology 
Abstract: Environmental factors such as nutritional interventions during early developmental stages affect and establish long-term metabolic changes in all animals. Diet during the spawning period has a nutritional programming effect in offspring of gilthead seabream and affects long-term metabolism. Studies showed modulation of genes such as fads2, which is considered to be a rate-limiting step in the synthesis of n-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA). However, it is still unknown whether this adaptation is related to the presence of precursors or to limitations in the pre-formed products, n-3 LC-PUFA, contained in the diets used during nutritional programming. This study investigated the combined effects of nutritional programming on Sparusaurata through broodstock diets during the spawning period and in broodfish showing higher or lower fads2 expression levels in the blood after 1 month of feeding with a diet containing high levels of plant protein sources and vegetable oils (VM/VO). Broodfish showing high fads2 expression had a noticeable improvement in spawning quality parameters as well as in the growth of 6 month old offspring when challenged with a high VM/VO diet. Further, nutritional conditioning with 18:3n-3-rich diets had an adverse effect in comparison to progeny obtained from fish fed high fish meal and fish oil (FM/FO) diets, with a reduction in growth of juveniles. Improved growth of progeny from the high fads2 broodstock combined with similar muscle fatty acid profiles is also an excellent option for tailoring and increasing the flesh n-3 LC-PUFA levels to meet the recommended dietary allowances for human consumption.
ISSN: 1477-9145
DOI: 10.1242/jeb.214999
Source: The Journal of experimental biology [EISSN 1477-9145], v. 223, jeb214999 (Diciembre 2020)
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