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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Impact of dietary carbohydrate/protein ratio on hepatic metabolism in land-locked Atlantic salmon (Salmo salar L.)
Other Titles: Dietary carbohydrate in land-locked salmon
Author(s): Betancor, Monica
Olsen, Rolk Erik
Marandel, Lucie
Skulstad, Ole F
Madaro, Angelico
Tocher, Douglas R
Panserat, Stephane
Keywords: Salmon Populations
Dietary carbohydrate
glucose metabolism
Issue Date: 6-Dec-2018
Citation: Betancor M, Olsen RE, Marandel L, Skulstad OF, Madaro A, Tocher DR & Panserat S (2018) Impact of dietary carbohydrate/protein ratio on hepatic metabolism in land-locked Atlantic salmon (Salmo salar L.) [Dietary carbohydrate in land-locked salmon]. Frontiers in Physiology, 9, Art. No.: 1751.
Abstract: A common-garden experiment was carried out to compare two genetically distinct strains of Atlantic salmon (Salmo salar) fed diets with either high (CHO) or low (NoCHO) digestible carbohydrate (starch). Twenty salmon from either a commercial farmed strain (F) or a land-locked population (G) were placed in two tanks (10 fish of each population in each tank) and fed either CHO or NoCHO feeds. At the end of the experiment fish were fasted for 8 h, euthanized and blood and liver collected. Both diet and population had an effect on circulating glucose levels with G showing hypoglycaemia and dietary starch increasing this parameter. In contrast, G showed increased plasma triacylglycerol levels regardless of dietary treatment suggesting faster conversion of glucose to triacylglycerol. This different ability to metabolise dietary starch among strains was also reflected at a molecular (gene) level as most of the metabolic pathways evaluated were mainly affected by the factor population rather than by diet. The data are promising and suggest different regulatory capacities towards starch utilization between land-locked salmon and the farmed stock. Further analyses are necessary in order to fully characterise the capacity of land-locked salmon to utilise dietary carbohydrate.
DOI Link: 10.3389/fphys.2018.01751
Rights: © 2018 Betancor, Olsen, Marandel, Skulstad, Madaro, Tocher and Panserat. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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