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Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Effect of dietary saturated and monounsaturated fatty acids in juvenile barramundi Lates calcarifer (Forthcoming/Available Online)
Authors: Salini, Michael J
Turchini, Giovanni M
Glencross, Brett
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Keywords: barramundi
fatty acid
monounsaturated fatty acids
saturated fatty acids
Issue Date: 30-Nov-2015
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. 
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