Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30608
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Effects of dietary arachidonic acid in European sea bass (Dicentrarchus labrax) distal intestine lipid classes and gut health
Author(s): Rivero-Ramirez, Fernando
Torrecillas, Silvia
Betancor, Monica B
Izquierdo, Marisol S
Caballero, Maria Jose
Montero, Daniel
Contact Email: m.b.betancor@stir.ac.uk
Keywords: Aquaculture
Dicentrarchus labrax
Arachidonic acid
Gut polar lipids
Distal intestine
Gut health
Issue Date: Apr-2020
Citation: Rivero-Ramirez F, Torrecillas S, Betancor MB, Izquierdo MS, Caballero MJ & Montero D (2020) Effects of dietary arachidonic acid in European sea bass (Dicentrarchus labrax) distal intestine lipid classes and gut health. Fish Physiology and Biochemistry, 46 (2), p. 681–697. https://doi.org/10.1007/s10695-019-00744-0
Abstract: The use of low fishmeal/fish oil in marine fish diets affects dietary essential fatty acids (EFAs) composition and concentration and, subsequently, may produce a marginal deficiency of those fatty acids with a direct impact on the fish intestinal physiology. Supplementation of essential fatty acids is necessary to cover the requirements of the different EFAs, including the ones belonging to the n-6 series, such as arachidonic acid (ARA). ARA, besides its structural role in the configuration of the lipid classes of the intestine, plays an important role in the functionality of the gut-associated immune tissue (GALT). The present study aimed to test five levels of dietary ARA (ARA0.5 (0.5%), ARA1 (1%), ARA2 (2%), ARA4 (4%), and ARA6 (6%)) for European sea bass (Dicentrarchus labrax) juveniles in order to determine (a) its effect in selected distal intestine (DI) lipid classes composition and (b) how these changes affected gut bacterial translocation rates and selected GALT-related gene expression pre and post challenge. No differences were found between distal intestines of fish fed with the graded ARA levels in total neutral lipids and total polar lipids. However, DI of fish fed with the ARA6 diet presented a higher (P 
DOI Link: 10.1007/s10695-019-00744-0
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is a post-peer-review, pre-copyedit version of an article published in Fish Physiology and Biochemistry. The final authenticated version is available online at: https://doi.org/10.1007/s10695-019-00744-0
Licence URL(s): https://storre.stir.ac.uk/STORREEndUserLicence.pdf

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