The effect of marine and non-marine phospholipid rich oils when fed to juvenile barramundi (Lates calcarifer)

Salini, Michael J., Wade, Nicholas, Bourne, Nicholas, Turchini, Giovanni M. and Glencross, Brett D. 2016, The effect of marine and non-marine phospholipid rich oils when fed to juvenile barramundi (Lates calcarifer), Aquaculture, vol. 455, pp. 125-135, doi: 10.1016/j.aquaculture.2016.01.013.

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Title The effect of marine and non-marine phospholipid rich oils when fed to juvenile barramundi (Lates calcarifer)
Author(s) Salini, Michael J.
Wade, Nicholas
Bourne, Nicholas
Turchini, Giovanni M.ORCID iD for Turchini, Giovanni M.
Glencross, Brett D.
Journal name Aquaculture
Volume number 455
Start page 125
End page 135
Total pages 11
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-03-20
ISSN 0044-8486
Summary An experiment was conducted to assess the response of juvenile barramundi (Lates calcarifer) to four diets containing either marine- or non-marine derived neutral lipid (NL) or polar lipid (PL) sources for eight weeks in a 2 × 2 factorial design. The four diets contained 8.2% added lipid composed of a 1% fish oil base with 7.2% test lipid (n - 3 NL: Fish oil, n - 3 PL: Krill oil, n - 6 NL: Soybean oil, n - 6 PL: Soybean lecithin). The results demonstrated that the different lipid sources (either n - 3 or n - 6 omega series from either NL or PL class) had significant effects on growth performance and feed utilisation with some interaction terms noted. Growth was negatively affected in the n - 6 NL fish and the feed conversion (FCR) was highest in the n - 6 PL fish. Digestibility of total lipid and some specific fatty acids (notably 18:2n - 6 and 18:3n - 3) were also negatively affected in the n - 6 PL fish. Analysis of the whole body neutral lipid fatty acid composition showed that these mirrored those of the diets and significant interaction terms were noted. However, the whole body polar lipid fatty acids appeared to be more tightly regulated in comparison. The blood plasma biochemistry and hepatic transcription of several fatty acid metabolism genes in the n - 6 PL fed and to a lesser extent in the n - 6 NL fed fish demonstrated a pattern consistent with modified metabolic function. These results support that there are potential advantages in using phospholipid-rich oils however there are clear differences in terms of their origin. Statement of relevance: Juvenile barramundi may benefit from dietary phospholipid.
Language eng
DOI 10.1016/j.aquaculture.2016.01.013
Field of Research 070401 Aquaculture
0608 Zoology
Socio Economic Objective 830102 Aquaculture Fin Fish (excl. Tuna)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
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