Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/23832
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Rapid effects of essential fatty acid deficiency on growth and development parameters and transcription of key fatty acid metabolism genes in juvenile barramundi (Lates calcarifer)
Authors: Salini, Michael J
Turchini, Giovanni M
Wade, Nicholas M
Glencross, Brett
Contact Email: b.d.glencross@stir.ac.uk
Keywords: Essential fatty acids
Deficiency
Aetiology
Barramundi
Issue Date: Dec-2015
Publisher: Cambridge University Press
Citation: Salini MJ, Turchini GM, Wade NM & Glencross B (2015) Rapid effects of essential fatty acid deficiency on growth and development parameters and transcription of key fatty acid metabolism genes in juvenile barramundi (Lates calcarifer), British Journal of Nutrition, 114 (11), pp. 1784-1796.
Abstract: Barramundi (Lates calcarifer), a catadromous teleost of significant and growing commercial importance, are reported to have limited fatty acid bioconversion capability and therefore require preformed long-chain PUFA (LC-PUFA) as dietary essential fatty acid (EFA). In this study, the response of juvenile barramundi (47·0 g/fish initial weight) fed isolipidic and isoenergetic diets with 8·2 % added oil was tested. The experimental test diets were either devoid of fish oil (FO), and thus with no n-3 LC-PUFA (FO FREE diet), or with a low inclusion of FO (FO LOW diet). These were compared against a control diet containing only FO (FO CTRL diet) as the added lipid source, over an 8-week period. Interim samples and measurements were taken fortnightly during the trial in order to define the aetiology of the onset and progression of EFA deficiency. After 2 weeks, the fish fed the FO FREE and FO LOW diets had significantly lower live-weights, and after 8 weeks significant differences were detected for all performance parameters. The fish fed the FO FREE diet also had a significantly higher incidence of external abnormalities. The transcription of several genes involved in fatty acid metabolism was affected after 2 weeks of feeding, showing a rapid nutritional regulation. This experiment documents the aetiology of the onset and the progression of EFA deficiency in juvenile barramundi and demonstrates that such deficiencies can be detected within 2 weeks in juvenile fish.
Type: Journal Article
URI: http://hdl.handle.net/1893/23832
DOI Link: http://dx.doi.org/10.1017/S0007114515003529
Rights: Publisher policy allows this work to be made available in this repository. Published in British Journal of Nutrition / Volume 114 / Issue 11 / December 2015, pp 1784-1796 by Cambridge University Press. The original publication is available at: http://dx.doi.org/10.1017/S0007114515003529
Affiliation: Deakin University
Deakin University
CSIRO Marine and Atmospheric Research
Aquaculture

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