alexa Farmed Salmon and Farmed Rainbow Trout - Excellent Sources of Vitamin D?
ISSN: 2150-3508

Fisheries and Aquaculture Journal
Open Access

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Research Article

Farmed Salmon and Farmed Rainbow Trout - Excellent Sources of Vitamin D?

Jette Jakobsen1* and Cat Smith2

1National Food Institute, Technical University of Denmark, Kemitorvet, DK-2800, Lyngby, Denmark

2Bantry Marine Research Station, Gearhies, Bantry, Co. Cork, Ireland

*Corresponding Author:
Jette Jakobsen
National Food Institute, Technical University of Denmark
Kemitorvet DK-2800, Lyngby, Denmark
Tel: +45 2025 9192
E-mail: [email protected]

Received date: April 22, 2017; Accepted date: June 05, 2017; Published date: June 12, 2017

Citation: Jakobsen J, Smith C (2017) Farmed Salmon and Farmed Rainbow Trout-Excellent Sources of Vitamin D? Fish Aqua J 8:204. doi: 10.4172/2150-3508.1000204

Copyright: © 2017 Jakobsen J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Fatty fish are generally stated as having high vitamin D content and among these are salmon and trout. In the aquaculture industry of salmonids the two main species produced are Salmo salar (Atlantic salmon) and Onchorhynchus mykiss (rainbow trout). Published data have shown lower content of vitamin D in farmed than in wild species, but generally data on vitamin D in farmed salmon and rainbow trout are scarce. In commercial production facilities we aimed to study the variation of vitamin D in farmed salmon and rainbow trout prepared for sale to consumer. Thirteen organically produced salmon and 18 rainbow trout were sampled within the range 0.7-4.0 kg of gutted weight. All fish were ready for consumption, and analysed for content of vitamin D3, 25-hydroxyvitamin D3, and fat. Mean vitamin D3 content in salmon and rainbow trout was 1.6 ± 0.5, and 5.0 ± 2.3 μg/100 g, respectively. Compared to vitamin D3, the content of 25-hydroxyvitamin D3 was 11% and 3%, respectively. In farmed salmon a linear relationship with vitamin D3 being dependent on weight (P<0.05) as well as to fat content (P<0.05), while no similar relationship was found for farmed rainbow trout. Despite this, both species exhibit a linear correlation between fat and gutted weight (P<0.001). The results indicate that there is a difference in the storage of vitamin D between the two salmonids, as 25- found in the salmonids is challenging farmed salmon and farmed trout as an essential vitamin D source.

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