Research output

Article in Journal

Effect of dietary saturated and monounsaturated fatty acids in juvenile barramundi Lates calcarifer (Forthcoming/Available Online)

Citation
Salini MJ, Turchini GM & Glencross B (2015) Effect of dietary saturated and monounsaturated fatty acids in juvenile barramundi Lates calcarifer (Forthcoming/Available Online), Aquaculture Nutrition.

Abstract
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. 

Keywords
barramundi; fatty acid; metabolism; monounsaturated fatty acids; saturated fatty acids; β-oxidation

StatusIn press
AuthorsSalini Michael J, Turchini Giovanni M, Glencross Brett
Publication date online30/11/2015
Date accepted by journal29/09/2015
PublisherWiley-Blackwell
ISSN 1353-5773
LanguageEnglish

Journal
Aquaculture Nutrition (2015)

© University of Stirling FK9 4LA Scotland UK • Telephone +44 1786 473171 • Scottish Charity No SC011159
My Portal