Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30555
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: The effects of combined phytogenics on growth and nutritional physiology of Nile tilapia Oreochromis niloticus
Author(s): Aanyu, Margaret
Betancor, Monica
Monroig, Oscar
Contact Email: m.b.betancor@stir.ac.uk
Keywords: Growth promoters
limonene
Nile tilapia
nutritional physiology
phytogenic compounds
thymol
Issue Date: 30-Mar-2020
Citation: Aanyu M, Betancor M & Monroig O (2020) The effects of combined phytogenics on growth and nutritional physiology of Nile tilapia Oreochromis niloticus. Aquaculture, 519, Art. No.: 734867. https://doi.org/10.1016/j.aquaculture.2019.734867
Abstract: This study investigated whether dietary supplementation of phytogenic compounds limonene and thymol had synergistic or additive effects on growth and selected nutritional physiology pathways in Nile tilapia. A 63-day feeding experiment was conducted using fish of 1.5 ± 0.0 g (± standard error) fed on a commercial diet coated with either 0 ppm limonene and thymol (control), 400 ppm limonene (L), 500 ppm thymol, (T) or a combination of 400 ppm limonene and 500 ppm thymol (LT). Final fish weight (FW) was significantly improved to similar extents by diet LT (16.7 ± 0.3 g) and L (16.6 ± 0.4 g). Dietary thymol alone and the control did not enhance FW (15.0 ± 0.4 g and 13.7 ± 0.4 g respectively). Dietary thymol had shown a strong tendency to improve somatic growth (P =.052). The analysed candidate genes involved in the pathways of nutrient digestion, absorption and transport (muc), lipid metabolism (lpl), antioxidant enzymes (cat) and somatotropic axis growth (igf[sbnd]I) were also up-regulated to similar extents in Nile tilapia by diet L and LT (P < .05), above the regulation observed with the diet supplemented exclusively with thymol. This suggests lack of synergistic or additive effects on growth and nutritional physiology pathways when limonene and thymol are supplied in the diet.
DOI Link: 10.1016/j.aquaculture.2019.734867
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: Aanyu M, Betancor M & Monroig O (2020) The effects of combined phytogenics on growth and nutritional physiology of Nile tilapia Oreochromis niloticus. Aquaculture, 519, Art. No.: 734867. DOI: https://doi.org/10.1016/j.aquaculture.2019.734867. © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Licence URL(s): http://creativecommons.org/licenses/by-nc-nd/4.0/

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