title: Restoration of EPA and DHA in rainbow trout (Oncorhynchus mykiss) using a finishing fish oil diet at two different water temperatures.
abstract: Feeding fish a fish oil finishing diet (FOFD) after grow-out on vegetable oil diet is one strategy to restore eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) levels. We investigated restoration of EPA and DHA in rainbow trout fed a FOFD preceded by a grow-out period on 50% or 75% palm fatty acid distillate (PFAD) diets at optimal (15°C) or elevated (20°C) water temperatures. Using the FOFD restored EPA and DHA in fillet and whole carcass of fish previously fed either 50% PFAD diet from 85% to 98% or 75% PFAD from 66% to 93% of values obtained for fish fed FO diet throughout. Water temperature did not influence EPA and DHA restoration. Growing rainbow trout with diets where FO was replaced by either 50% or 75% PFAD followed by a FOFD reduced FO usage by around 30% and 44% at 15°C, respectively, and 32% and 48% at 20°C, respectively.
authors.affiliation: NCMCRS, University of Tasmania, Launceston, TAS 7250, Australia. mohamedc@utas.edu.au
authors.forename: Mohamed B
authors.initials: MB
authors.lastname: Codabaccus
authors.forename: Wing-Keong
authors.initials: WK
authors.lastname: Ng
authors.forename: Peter D
authors.initials: PD
authors.lastname: Nichols
authors.forename: Chris G
authors.initials: CG
authors.lastname: Carter
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D017756:Aquaculture / Q000379:methods*; D004281:Docosahexaenoic Acids / Q000378:metabolism*; D015118:Eicosapentaenoic Acid / Q000378:metabolism*; D005395:Fish Oils / Q000378:metabolism*; D008460:Meat / Q000032:analysis*; D017686:Oncorhynchus mykiss / Q000254:growth & development / Q000378:metabolism*; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D005395:Fish Oils; D014867:Water; D004281:Docosahexaenoic Acids; D015118:Eicosapentaenoic Acid