Effect of dietary saturated and monounsaturated fatty acids in juvenile barramundi Lates calcarifer

Barramundi (Lates calcarifer), a catadromous teleost of commercial interest, perform well when fed a wide range of dietary oils. However, the range of alternative oils now being explored is typically rich in saturated and monounsaturated fatty acids (SFA and MUFA). In this study, the response of juv...

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Bibliographic Details
Main Authors: Michael Salini, Giovanni Turchini, B D Glencross
Format: Other Non-Article Part of Journal/Newspaper
Language:unknown
Published: 2017
Subjects:
Uncategorized
Science & Technology
Life Sciences & Biomedicine
Fisheries
barramundi
fatty acid
metabolism
monoun-saturated fatty acids
saturated fatty acids
beta-oxidation
SALMON SALMO-SALAR
FISH-OIL REPLACEMENT
ATLANTIC SALMON
PALM OIL
RAINBOW-TROUT
LIPID SOURCES
RAPESEED OIL
SEA BASS
CROMILEPTES-ALTIVELIS
ONCORHYNCHUS-MYKISS
Atlantic salmon
Salmo salar
Online Access:http://hdl.handle.net/10536/DRO/DU:30081489
https://figshare.com/articles/journal_contribution/Effect_of_dietary_saturated_and_monounsaturated_fatty_acids_in_juvenile_barramundi_Lates_calcarifer/20888530
Description
Summary:Barramundi (Lates calcarifer), a catadromous teleost of commercial interest, perform well when fed a wide range of dietary oils. However, the range of alternative oils now being explored is typically rich in saturated and monounsaturated fatty acids (SFA and MUFA). In this study, the response of juvenile barramundi (47.0 g per fish initial weight) fed isolipidic and isoenergetic diets with 82 g kg−1 added oil was tested. The experimental test diets had a 2 : 1 or 1 : 2 ratio of SFA to MUFA (SFA-D and MUFA-D, respectively) compared to a control diet (CTRL-D) fed for 8 weeks. The diets containing mostly olive oil (dietary MUFA-D) and mostly refined palm oil (dietary SFA-D) did not impact the growth performance or feed utilization parameters of the barramundi. The in vivo beta-oxidation activity was consistent with the dietary fatty acid composition, with the most dominant FA being heavily beta-oxidized. Together, the in vivo whole-body mass balance of fatty acids showed that n-3 long-chain polyunsaturated fatty acids (LC-PUFA) were most efficiently utilized in the SFA-D- and MUFA-D-fed fish. This study provides evidence that additional dietary MUFA and SFA are suitable lipid classes for juvenile barramundi and they are both equally efficient at sparing LC-PUFA from an oxidative fate.

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