Fatty Acid Profile of Sunshine Bass: I. Profile Change is Affected by Initial Composition and Differs Among Tissues

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dc.contributor.authorJesse T. Trushenski
dc.contributor.authorHeidi A. Lewis
dc.contributor.authorChristopher C. Kohler
dc.date.accessioned2014-05-02T06:44:01Z
dc.date.available2014-05-02T06:44:01Z
dc.date.issued2008
dc.description.abstractFatty acid (FA) composition of fillet tissue can be tailored by transitioning fish from alternative lipidbased, low long-chain polyunsaturated fatty acid (LCPUFA) grow-out feeds to high LC-PUFA ‘‘finishing’’ feeds. To address whether grow-out feed composition influences the responsiveness of fillet tissue to finishing, sunshine bass (SB, Morone chrysops 9 M. saxatilis) were reared to a submarketable size on grow-out feeds containing fish oil (FO) or a 50:50 blend of FO and coconut (CO), grapeseed (GO), linseed (LO), or poultry (PO) oil. For the final 8 weeks of the trial, fish were either maintained on assigned grow-out feeds or finished with the 100% FO feed. Production performance was unaffected by dietary lipid source, but fillet FA profile generally conformed to nutritional history. Regardless of grow-out regimen, finishing had a significant restorative effect on fillet FA composition; however, complete restoration of control levels of 20:5n-3, 22:6n-3, total LC-PUFA and n- 3:n-6 FA ratio was achieved only among fish fed the CObased grow-out feed. Saturated fatty acids (SFA) appear to be preferential catabolic substrates, whereas medium-chain and long-chain PUFA are selectively deposited in tissues. Provision of SFA in grow-out feeds appears to optimize selective FA metabolism and restoration of beneficial fillet FA profile during finishing.en_US
dc.identifier.citationLipids (2008) 43:629–641en_US
dc.identifier.urihttp://hdl.handle.net/123456789/806
dc.language.isoenen_US
dc.subjectFish oilen_US
dc.subjectAlternative lipiden_US
dc.subjectFinishing feeden_US
dc.subjectFatty acid turnover/dilutionen_US
dc.subjectLC-PUFAen_US
dc.subjectMorone spp.en_US
dc.titleFatty Acid Profile of Sunshine Bass: I. Profile Change is Affected by Initial Composition and Differs Among Tissuesen_US
dc.typeArticleen_US

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