Significant augmentation of sunshine bass Morone chrysops x M. saxatilis fillet highly unsaturated fatty acid content without impact on oxidative stability or sensory attributes.

摘要

Production performance, fillet composition and sensory integrity of sunshine bass (Morone chrysops x M. saxatilis) fed a marine oil-based finishing feed after being raised on a plant oil-based production feed were investigated. 2 feeds containing either corn oil (CO) or menhaden oil (MO) were fed to sunshine bass according to different feeding regimens at the close of the production cycle: control groups were fed the CO or the MO feeds exclusively; remaining groups were transitioned from the CO feed to the MO feed at 4-, 8- or 12-wk intervals. Replacing MO with CO yielded fillets with distinctly different fatty acid profiles; however, finishing with an MO-based feed for 4-8 wk offered significant compensation for reductions in fillet nutritional quality. Production performance and fillet sensory characteristics were largely unaffected by dietary lipid source, suggesting that fillet fatty acid profile may be manipulated to maximize the nutritional value of cultured fillets without reducing consumer acceptance.