Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/23894
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: The use of biorefinery by-products and natural detritus as feed sources for Oysters (Crassostrea gigas) juveniles
Authors: Carboni, Stefano
Clegg, Samuel H
Hughes, Adam D
Contact Email: stefano.carboni@stir.ac.uk
Keywords: Oyster nutrition
Biorefinery
Single cell detritus
Sea urchin
Issue Date: 1-Nov-2016
Publisher: Elsevier
Citation: Carboni S, Clegg SH & Hughes AD (2016) The use of biorefinery by-products and natural detritus as feed sources for Oysters (Crassostrea gigas) juveniles , Aquaculture, 464, pp. 392-398.
Abstract: New research is currently underway to explore the potential of macroalgae for the production of biofuels. Marine biofuels in general and macroalgae in particular, offer a number of advantages over terrestrial biofuels including reduced competition for freshwater resources and for land use. Sugars can be extracted from macroalgae and processed into biofuels by anaerobic digestion and fermentation. This process generates significant waste biomass, which, if used, could improve the economic sustainability of the biorefinery sector. Bivalves’ aquaculture relies heavily on the production of unicellular algae to feed juvenile individuals and this can represent a bottleneck for the bivalve industry especially in locations where sunlight is limited. Previous research explored the use of macroalgae derived digestate as alternative or integrative feed for juvenile bivalves, exploiting the notion that organic particulate matter (detritus) is an integral part of this animal class natural diet. The prospect of using waste products from the emerging biorefinery industry to solve a bottleneck for aquaculture businesses and, by so doing, improving profitability of both, is an exciting one. In this paper we describe the main nutritional profiles (Protein, Lipid, Carbohydrates and Fatty acids) of the tested diets and investigate the potential for the use of a biorefinery a by-product as replacement option for bivalves’ production, by benchmarking it against aquaculture industry standards (live microalgae and commercially available algae paste) and natural detritus constituted by farmed sea urchin digesta. Both the digestate and the natural detritus supported the survival and growth of bivalve spat, especially when used at 50% inclusion rate, over the course of 4-week preliminary trials. Data suggest that a synergistic effect of the nutritional profiles of the diets employed may underpin the observed results.
Type: Journal Article
URI: http://hdl.handle.net/1893/23894
DOI Link: http://dx.doi.org/10.1016/j.aquaculture.2016.07.021
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: Carboni S, Clegg SH & Hughes AD (2016) The use of biorefinery by-products and natural detritus as feed sources for Oysters (Crassostrea gigas) juveniles , Aquaculture, 464, pp. 392-398. DOI: 10.1016/j.aquaculture.2016.07.021 © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Affiliation: Aquaculture
University of Stirling
Scottish Marine Institute

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