Effects of Dietary Vitamin B6 Supplementation on Fillet Fatty Acid Composition and Fatty Acid Metabolism of Rainbow Trout Fed Vegetable Oil Based Diets

Senadheera, Shyamalie D., Turchini, Giovanni M., Thanuthong, Thanongsak and Francis, David S. 2012, Effects of Dietary Vitamin B6 Supplementation on Fillet Fatty Acid Composition and Fatty Acid Metabolism of Rainbow Trout Fed Vegetable Oil Based Diets, Journal of Agricultural and Food Chemistry, vol. 60, no. 9, pp. 2343-2353.

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Title Effects of Dietary Vitamin B6 Supplementation on Fillet Fatty Acid Composition and Fatty Acid Metabolism of Rainbow Trout Fed Vegetable Oil Based Diets
Author(s) Senadheera, Shyamalie D.
Turchini, Giovanni M.
Thanuthong, Thanongsak
Francis, David S.
Journal name Journal of Agricultural and Food Chemistry
Volume number 60
Issue number 9
Start page 2343
End page 2353
Total pages 11
Publisher American Chemical Society
Place of publication Washington, United States
Publication date 2012-02-15
ISSN 0021-8561
Keyword(s) ALA
Aquaculture
Desaturase
DHA
Elongase
EPA
Fish oil replacement
Pyridoxine
Vitamin B 6
Summary Fish oil replacement in aquaculture feeds results in major modifications to the fatty acid makeup of cultured fish. Therefore, in vivo fatty acid biosynthesis has been a topic of considerable research interest. Evidence suggests that pyridoxine (vitamin B6) plays a role in fatty acid metabolism, and in particular, the biosynthesis of LC-PUFA has been demonstrated in mammals. However, there is little information on the effects of dietary pyridoxine availability in fish fed diets lacking LC-PUFA. This study demonstrates a relationship between dietary pyridoxine supplementation and fatty acid metabolism in rainbow trout. In particular, the dietary pyridoxine level was shown to modulate and positively stimulate the activity of the fatty acid elongase and Δ-6 and Δ-5 desaturase enzymes, deduced by the whole-body fatty acid balance method. This activity was insufficient to compensate for a diet lacking in LC-PUFA but does highlight potential strategies to maximize this activity in cultured fish, especially when fish oil is replaced with vegetable oils.
Language eng
Field of Research 070401 Aquaculture
079999 Agricultural and Veterinary Sciences not elsewhere classified
Socio Economic Objective 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30046943

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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