title: Restoration of fillet n-3 long-chain polyunsaturated fatty acid is improved by a modified fish oil finishing diet strategy for atlantic salmon (Salmo salar L.) smolts fed palm fatty acid distillate.
abstract: Reducing the lipid content in fish prior to feeding a fish oil finishing diet (FOFD) has the potential to improve n-3 long-chain (≥ C(20)) polyunsaturated fatty acid (LC-PUFA) restoration. This study had two main objectives: (1) determine whether feeding Atlantic salmon smolt a 75% palm fatty acid distillate diet (75PFAD) improves the apparent digestibility (AD) of saturated fatty acids (SFA) and (2) examine whether a food deprivation period after growth on 75PFAD leads to higher n-3 LC-PUFA restoration in the fillet when applying a FOFD. The AD of SFA was higher for 75PFAD compared to that of a fish oil (FO) diet. The relative level (as % total fatty acids (FA)) of n-3 LC-PUFA was higher in unfed fish compared to that in continuously fed fish after 21 and 28 day FOFD periods, respectively. Our results suggest that a food deprivation period prior to feeding a FOFD improves the efficiency of n-3 LC-PUFA restoration in the fillet of Atlantic salmon smolt.
authors: NCMCRS, University of Tasmania, Bag 1370, Launceston TAS 7250, Australia. mohamedc@utas.edu.au
authors: Mohamed B
authors: MB
authors: Codabaccus
authors: Andrew R
authors: AR
authors: Bridle
authors: Peter D
authors: PD
authors: Nichols
authors: Chris G
authors: CG
authors: Carter
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D015525:Fatty Acids, Omega-3 / Q000032:analysis / Q000378:metabolism*; D005395:Fish Oils / Q000032:analysis / Q000378:metabolism*; D008460:Meat / Q000032:analysis; D000073878:Palm Oil; D010938:Plant Oils / Q000378:metabolism*; D020317:Salmo salar / Q000378:metabolism*
chemical_list: D015525:Fatty Acids, Omega-3; D005395:Fish Oils; D010938:Plant Oils; D000073878:Palm Oil