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Replacement of dietary fish oil for Atlantic salmon parr (Salmo salar L.) with a stearidonic acid containing oil has no effect on omega-3 long-chain polyunsaturated fatty acid concentrations.

Abstract

The worldwide increase in aquaculture production and the concurrent decrease of wild fish stocks has made the replacement of fish oil in aquafeeds an industry priority. Oil from a plant source Echium plantagineum L., Boraginaceae, has high levels of stearidonic acid (SDA, 18:4omega3, 14%) a biosynthetic precursor of omega-3 long-chain (> or =C(20)) polyunsaturated fatty acids (omega3 LC-PUFA). Atlantic salmon (Salmo salar L.) parr were fed a control fish oil diet (FO) or one of 3 experimental diets with 100% canola oil (CO) 100% SDA oil (SO), and a 1:1 mix of CO and SDA oil (MX) for 42 days. There were no differences in the growth or feed efficiency between the four diets. However, there were significant differences in the fatty acid (FA) profiles of the red and white muscle tissues. Significantly higher amounts of SDA, eicosapentaenoic acid (20:5omega3, EPA), docosahexaenoic acid (22:6omega3, DHA) and total omega3 FA occurred in both red and white muscle tissues of fish fed SO and FO compared with those fed CO. Feeding SO diet resulted in omega3 LC-PUFA amounts in the white and red muscle being comparable to the FO diet. This study shows that absolute concentration (mug/g) of EPA, DHA and total omega3 have been maintained over 6 weeks for Atlantic salmon fed 14% SDA oil. The balance between increased biosynthesis and retention of omega3 LC-PUFA to maintain the concentrations observed in the SO fed fish remains to be conclusively determined, and further studies are needed to ascertain this.

Authors+Show Affiliations

School of Aquaculture, Tasmanian Aquaculture and Fisheries Institute, University of Tasmania, Locked Bag 1370, Launceston, Tasmania, Australia. matthew.miller@utas.edu.auNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17134928

Citation

Miller, Matthew R., et al. "Replacement of Dietary Fish Oil for Atlantic Salmon Parr (Salmo Salar L.) With a Stearidonic Acid Containing Oil Has No Effect On Omega-3 Long-chain Polyunsaturated Fatty Acid Concentrations." Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, vol. 146, no. 2, 2007, pp. 197-206.
Miller MR, Nichols PD, Carter CG. Replacement of dietary fish oil for Atlantic salmon parr (Salmo salar L.) with a stearidonic acid containing oil has no effect on omega-3 long-chain polyunsaturated fatty acid concentrations. Comp Biochem Physiol B, Biochem Mol Biol. 2007;146(2):197-206.
Miller, M. R., Nichols, P. D., & Carter, C. G. (2007). Replacement of dietary fish oil for Atlantic salmon parr (Salmo salar L.) with a stearidonic acid containing oil has no effect on omega-3 long-chain polyunsaturated fatty acid concentrations. Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology, 146(2), pp. 197-206.
Miller MR, Nichols PD, Carter CG. Replacement of Dietary Fish Oil for Atlantic Salmon Parr (Salmo Salar L.) With a Stearidonic Acid Containing Oil Has No Effect On Omega-3 Long-chain Polyunsaturated Fatty Acid Concentrations. Comp Biochem Physiol B, Biochem Mol Biol. 2007;146(2):197-206. PubMed PMID: 17134928.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Replacement of dietary fish oil for Atlantic salmon parr (Salmo salar L.) with a stearidonic acid containing oil has no effect on omega-3 long-chain polyunsaturated fatty acid concentrations. AU - Miller,Matthew R, AU - Nichols,Peter D, AU - Carter,Chris G, Y1 - 2006/10/21/ PY - 2006/07/10/received PY - 2006/10/16/revised PY - 2006/10/17/accepted PY - 2006/12/1/pubmed PY - 2007/7/6/medline PY - 2006/12/1/entrez SP - 197 EP - 206 JF - Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology JO - Comp. Biochem. Physiol. B, Biochem. Mol. Biol. VL - 146 IS - 2 N2 - The worldwide increase in aquaculture production and the concurrent decrease of wild fish stocks has made the replacement of fish oil in aquafeeds an industry priority. Oil from a plant source Echium plantagineum L., Boraginaceae, has high levels of stearidonic acid (SDA, 18:4omega3, 14%) a biosynthetic precursor of omega-3 long-chain (> or =C(20)) polyunsaturated fatty acids (omega3 LC-PUFA). Atlantic salmon (Salmo salar L.) parr were fed a control fish oil diet (FO) or one of 3 experimental diets with 100% canola oil (CO) 100% SDA oil (SO), and a 1:1 mix of CO and SDA oil (MX) for 42 days. There were no differences in the growth or feed efficiency between the four diets. However, there were significant differences in the fatty acid (FA) profiles of the red and white muscle tissues. Significantly higher amounts of SDA, eicosapentaenoic acid (20:5omega3, EPA), docosahexaenoic acid (22:6omega3, DHA) and total omega3 FA occurred in both red and white muscle tissues of fish fed SO and FO compared with those fed CO. Feeding SO diet resulted in omega3 LC-PUFA amounts in the white and red muscle being comparable to the FO diet. This study shows that absolute concentration (mug/g) of EPA, DHA and total omega3 have been maintained over 6 weeks for Atlantic salmon fed 14% SDA oil. The balance between increased biosynthesis and retention of omega3 LC-PUFA to maintain the concentrations observed in the SO fed fish remains to be conclusively determined, and further studies are needed to ascertain this. SN - 1096-4959 UR - https://www.unboundmedicine.com/medline/citation/17134928/Replacement_of_dietary_fish_oil_for_Atlantic_salmon_parr__Salmo_salar_L___with_a_stearidonic_acid_containing_oil_has_no_effect_on_omega_3_long_chain_polyunsaturated_fatty_acid_concentrations_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1096-4959(06)00368-X DB - PRIME DP - Unbound Medicine ER -