|Appears in Collections:||Aquaculture Journal Articles|
|Peer Review Status:||Refereed|
|Title:||Altered fatty acid compositions in Atlantic salmon (Salmo salar) fed diets containing linseed and rapeseed oils can be partially restored by a subsequent fish oil finishing diet|
|Authors:||Bell, J Gordon|
Tocher, Douglas R
Henderson, R James
Dick, James R
Lipid and fatty acid composition
|Publisher:||American Society for Nutritional Sciences|
|Citation:||Bell JG, Tocher DR, Henderson RJ, Dick JR & Crampton V (2003) Altered fatty acid compositions in Atlantic salmon (Salmo salar) fed diets containing linseed and rapeseed oils can be partially restored by a subsequent fish oil finishing diet, Journal of Nutrition, 133 (9), pp. 2793-2801.|
|Abstract:||Atlantic salmon post-smolts were fed ten experimental diets containing various blends of two vegetable oils, linseed (LO) and rapeseed oil (RO), and fish oil (FO) in a triangular trial design, for 50 weeks. After sampling, fish previously fed 100% FO, LO and RO were switched to a diet containing 100% FO and grown on for a further 20 weeks. Fatty acid compositions of flesh total lipid were linearly correlated with dietary fatty acid compositions (r = 0.99-1.00, P < 0.0001). Inclusion of vegetable oil at 33% of total oil resulted in a reduction in the concentrations of the highly unsaturated fatty acids, eicosapentaenoate [20:5(n-3)] and docosahexaenoate [22:6(n-3)], to around 70 and 75%, respectively, of the values in fish fed 100% FO. When vegetable oil was included at 100% of total dietary lipid the concentrations of 20:5(n-3) and 22:6(n-3) were reduced to around 30% and 36%, respectively, of the values in fish fed FO. Transfer of fish previously fed 100% vegetable oil to a 100% FO diet for 20 weeks, restored the concentrations of 20:5(n-3) and 22:6(n-3) to around 80% of the value in fish fed 100% FO for 70 weeks. However, concentrations of 18:2(n-6) remained about 1.5-fold higher, compared to fish fed 100% FO, in fish previously fed either 100% LO or RO. This study suggests that RO and LO can be used successfully to culture salmon through the seawater phase of their growth cycle although this will result in reductions in flesh 20:5(n-3) and 22:6(n-3) concentrations that can be partially restored by resuming a diet containing only marine FO for a period prior to harvest.|
|Rights:||The publisher does not allow this work to be made publicly available in this Repository. 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.|
University of Stirling
|Ewos VO Flesh final.pdf||592.49 kB||Adobe PDF||Under Embargo until 31/12/2999 Request a copy|
Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.
This item is protected by original copyright
Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
If you believe that any material held in STORRE infringes copyright, please contact email@example.com providing details and we will remove the Work from public display in STORRE and investigate your claim.