Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25330
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat
Authors: Salini, Michael J
Irvin, Simon
Bourne, Nicholas
Blyth, David
Cheers, Susan
Habilay, Natalie
Glencross, Brett
Keywords: Marginal efficiency
LC-PUFA
Fatty acid
Fish oil
Poultry fat
Issue Date: 1-Dec-2015
Citation: Salini MJ, Irvin S, Bourne N, Blyth D, Cheers S, Habilay N & Glencross B (2015) Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat, Aquaculture, 449, pp. 48-57.
Abstract: An experiment was conducted with barramundi ( Lates calcarifer) juveniles to examine the marginal efficiency of utilisation of long chain-polyunsaturated fatty acids (LC-PUFA). A series of five diets with blends of fish (anchovy) oil and poultry fat (F100:P0, F60:P40, F30:P70, F15:P85, F0:P100) were fed to 208. ±. 4.1. g fish over a 12-week period. The replacement of fish oil with poultry fat had no impact on growth performance (average final weight of 548.3. ±. 10.2. g) or feed conversion (mean. =. 1.14. ±. 0.02). Analysis of the whole body composition showed that the fatty acid profile reflected that of the fed diet. However it was also shown that there was a disproportional retention of some fatty acids relative to others (notably LOA, 18:2n-6 and LNA, 18:3n-3). By examining the body mass independent retention of different fatty acids with differential levels of intake of each, the marginal efficiencies of the use of these nutrients by this species were able to be determined. The differential retention of fatty acids in the meat was also examined allowing the determination of oil blending strategies to optimise meat n-3 LC-PUFA levels. © 2015 Elsevier B.V.
DOI Link: http://dx.doi.org/10.1016/j.aquaculture.2015.02.027
Rights: Accepted refereed manuscript of: Salini MJ, Irvin S, Bourne N, Blyth D, Cheers S, Habilay N & Glencross B (2015) Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat, Aquaculture, 449, pp. 48-57. DOI: 10.1016/j.aquaculture.2015.02.027 © 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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