Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/26155
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Effect of increasing docosahexaenoic acid content in weaning diets on survival, growth and skeletal anomalies of longfin yellowtail (Seriola rivoliana, Valenciennes 1833)
Authors: Mesa-Rodriguez, Antonio
Hernandez-Cruz, Carmen Maria
Betancor, Monica
Fernández-Palacios, Hipolito
Izquierdo, Marisol S
Roo, Javier
Contact Email: m.b.betancor@stir.ac.uk
Keywords: longfin yellowtail
fish larvae
docosahexaenoic acid
microdiets
skeletal anomalies
Issue Date: Mar-2018
Citation: Mesa-Rodriguez A, Hernandez-Cruz CM, Betancor M, Fernández-Palacios H, Izquierdo MS & Roo J (2018) Effect of increasing docosahexaenoic acid content in weaning diets on survival, growth and skeletal anomalies of longfin yellowtail (Seriola rivoliana, Valenciennes 1833), Aquaculture Research, 49 (3), pp. 1200-1209.
Abstract: Five isoproteic (54.8%) and isolipidic (24.1%) microdiets, which varied in their docosahexaenoic acid (DHA) content (0.25, 0.75, 1.64, 1.99 and 3.17%; dw), were manufactured to determine its effects on longfin yellowtail Seriola rivoliana larvae in terms of fish biological performance, whole body fatty acid profile and incidence of skeletal anomalies from 30 dah (11.31 ± 1.79 Total Length, TL) to 50 dah (19.80±0.58 mm TL). The inclusion of dietary DHA up to 3.17% (dw) improved larval resistance to air exposure, although DHA did not significantly affect fish final growth or final survival. Indeed, high levels of dietary DHA (1.99% and 3.17%, dw) tended to increase the incidence of skeletal anomalies in S. rivoliana larvae, albeit no significant differences were observed. Furthermore, the occurrence of severe anomalies such as kyphosis and lordosis, was mainly associated to the larvae fed with the highest levels of dietary DHA. In terms of survival, increasing dietary DHA levels did not significantly affect longfin yellowtail survival rate, despite a tendency for enhanced survival. The results of the present study proved that the inclusion of dietary DHA in inert diets up to a 3.17% (dw) and a DHA/EPA ratio above 3.1 increased the final survival and stress resistance in S. rivoliana larvae.
DOI Link: http://dx.doi.org/10.1111/are.13573
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. This is the peer reviewed version of the following article: Mesa-Rodriguez A, Hernández-Cruz CM, Betancor MB, Fernández-Palacios H, Izquierdo MS, Roo J. Effect of increasing docosahexaenoic acid content in weaning diets on survival, growth and skeletal anomalies of longfin yellowtail (Seriola rivoliana, Valenciennes 1833). Aquaculture Research 2018;49:1200–1209, which has been published in final form at https://doi.org/10.1111/are.13573. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

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