An oil containing EPA and DHA from transgenic Camelina sativa to replace marine fish oil in feeds for Atlantic salmon (Salmo salar L.): Effects on intestinal transcriptome, histology, tissue fatty acid profiles and plasma biochemistry

A - Papers appearing in refereed journals

Betancor, M. B., Li, K., Sprague, M., Bardal, T., Sayanova, O. V., Usher, S., Han, L., Måsøval, K., Torrissen, O., Napier, J. A., Tocher, D. R. and Olsen, R. E. 2017. An oil containing EPA and DHA from transgenic Camelina sativa to replace marine fish oil in feeds for Atlantic salmon (Salmo salar L.): Effects on intestinal transcriptome, histology, tissue fatty acid profiles and plasma biochemistry. PLOS ONE. 12 (4), p. e0175415.

AuthorsBetancor, M. B., Li, K., Sprague, M., Bardal, T., Sayanova, O. V., Usher, S., Han, L., Måsøval, K., Torrissen, O., Napier, J. A., Tocher, D. R. and Olsen, R. E.
Abstract

New de novo sources of omega 3 (n-3) long chain polyunsaturated fatty acids (LC-PUFA) are required as alternatives to fish oil in aquafeeds in order to maintain adequate levels of the beneficial fatty acids, eicosapentaenoic and docosahexaenoic (EPA and DHA, respectively). The present study investigated the use of an EPA+DHA oil derived from transgenic Camelina sativa in Atlantic salmon (Salmo salar) feeds containing low levels of fishmeal (35%) and fish oil (10%), reflecting current commercial formulations, to determine the impacts on tissue fatty acid profile, intestinal transcriptome, and health of farmed salmon. Post-smolt Atlantic salmon were fed for 12-weeks with one of three experimental diets containing either a blend of fish oil/rapeseed oil (FO), wild-type camelina oil (WCO) or transgenic camelina oil (DCO) as added lipid source. The DCO diet did not affect any of the fish performance or health parameters studied. Analyses of the mid and hindgut transcriptomes showed only mild effects on metabolism. Flesh of fish fed the DCO diet accumulated almost double the amount of n-3 LC-PUFA than fish fed the FO or WCO diets, indicating that these oils from transgenic oilseeds offer the opportunity to increase the n-3 LC-PUFA in farmed fish to levels comparable to those found a decade ago.

Year of Publication2017
JournalPLOS ONE
Journal citation12 (4), p. e0175415
Digital Object Identifier (DOI)doi:10.1371/journal.pone.0175415
Open accessPublished as ‘gold’ (paid) open access
FunderResearch Council of Norway
Publisher's version
Output statusPublished
Publication dates
Online12 Apr 2017
Publication process dates
Accepted24 Mar 2017
PublisherPublic Library of Science
Public Library of Science (PLOS)
Copyright licenseCC BY
Grant ID245327
ISSN1932-6203

Permalink - https://repository.rothamsted.ac.uk/item/8v537/an-oil-containing-epa-and-dha-from-transgenic-camelina-sativa-to-replace-marine-fish-oil-in-feeds-for-atlantic-salmon-salmo-salar-l-effects-on-intestinal-transcriptome-histology-tissue-fatty-acid

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