Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/24192
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Defining the allometric relationship between size and individual fatty acid turnover in barramundi Lates calcarifer
Authors: Salini, Michael J
Poppi, David
Turchini, Giovanni M
Glencross, Brett
Contact Email: b.d.glencross@stir.ac.uk
Keywords: Allometric scaling
Maintenance
Fatty acid
Bioenergetics
LC-PUFA
Barramundi, Asian seabass
Issue Date: Nov-2016
Publisher: Elsevier
Citation: Salini MJ, Poppi D, Turchini GM & Glencross B (2016) Defining the allometric relationship between size and individual fatty acid turnover in barramundi Lates calcarifer, Comparative Biochemistry and Physiology Part A: Molecular and Integrative Physiology, 201, pp. 79-86.
Abstract: An experiment was conducted with barramundi (Asian seabass; Lates calcarifer) to examine the allometric scaling effect of individual fatty acids. Six treatment size classes of fish were deprived of food for 21 days (Treatment A, 10.5 ± 0.13 g; Treatment B, 19.2 ± 0.11 g; Treatment C, 28.3 ± 0.05 g; Treatment D, 122.4 ± 0.10 g; Treatment E, 217.6 ± 0.36 g; Treatment F, 443.7 ± 1.48 g; mean± SD) with each treatment comprising of fifteen fish, in triplicate. The assessment of somatic losses of whole-body energy and lipidwere consistentwith previous studies, validating themethodology to be extended to individual fatty acids. Live-weight (LW)exponent values were determined to be 0.817 ± 0.010 for energy and 0.895 ± 0.007 for lipid. There were significant differences among the fatty acids ranging from 0.687 ± 0.005 for 20:5n-3 (eicosapentaenoic acid) and 0.954 ± 0.008 for 18:1n-9 (oleic acid). The LW exponent values were applied to existing fatty acid intake and deposition data of barramundi fed with either 100% fish oil or 100% poultry oil. From this the maintenance requirement for each fatty acid was determined. The metabolic demands for maintenance and growth were then iteratively determined for fish over a range of size classes. Application of these exponent values to varying levels of fatty acid intake demonstrated that the biggest driver in the utilisation of fatty acids in this species is deposition demand and despite their reputed importance, the long-chain polyunsaturated fatty acids had nominal to no maintenance requirement.
Type: Journal Article
URI: http://hdl.handle.net/1893/24192
DOI Link: http://dx.doi.org/10.1016/j.cbpa.2016.06.028
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Salini MJ, Poppi D, Turchini GM & Glencross B (2016) Defining the allometric relationship between size and individual fatty acid turnover in barramundi Lates calcarifer, Comparative Biochemistry and Physiology Part A: Molecular and Integrative Physiology, 201, pp. 79-86. DOI: 10.1016/j.cbpa.2016.06.028 © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Affiliation: Deakin University
CSIRO Agriculture and Food
Deakin University
Aquaculture

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