Adult European Seabass (Dicentrarchus labrax) Perform Well on Alternative Circular-Economy-Driven Feed Formulations

There is an increasing need in the aquaculture industry for more sustainable and functional feed concepts for marine finfish. This study provides results for the effect of alternative feed formulations on health status, welfare parameters, sensory analysis, and growth performance in European seabass...

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Bibliographic Details
Published inSustainability Vol. 14; no. 12; p. 7279
Main Authors Petereit, Jessica, Hoerterer, Christina, Bischoff-Lang, Adrian A., Conceição, Luís E. C., Pereira, Gabriella, Johansen, Johan, Pastres, Roberto, Buck, Bela H.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2022
Subjects
Algae
Animal welfare
Animals
Aquaculture
By products
Byproducts
Carbon footprint
Circular economy
Consumption
Dicentrarchus labrax
Farming
Feeds
Fish
Food
Formulations
Hydrolysates
Ingredients
Lead
Parameters
Proteins
Seafood
Sensory evaluation
Sustainability
Sustainable development
Europe
Germany
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Summary:There is an increasing need in the aquaculture industry for more sustainable and functional feed concepts for marine finfish. This study provides results for the effect of alternative feed formulations on health status, welfare parameters, sensory analysis, and growth performance in European seabass (Dicentrarchus labrax) over an 83-day feeding trial. Fish were fed twice a day with five experimental diets. A control diet (control) and four different alternative feed concepts rich in processed animal proteins (PAP), other alternative ingredients (NOPAP), and a positive (NOPAP+) and negative (PAP−) formulation were tested. All alternative formulations contained hydrolysates from aquaculture by-products and macroalgae. The results indicate that the alternative feed concepts are more sustainable alternatives compared with the commercial diet. Equally interesting, the alternative formulations did not affect the sensory analysis of the fillet quality or the animal welfare. These are increasingly important factors in aquaculture products and, accordingly, also in the formulation of new feeds. Feed concepts that are not only more sustainable in their production, have shorter transportation distances, recycle the resources (usage of by-products), and have no adverse effect on growth or welfare parameters are highly needed. Therefore, the experimental diets tested in this study are a win-win concept for future seabass aquaculture production.
ISSN:2071-1050
2071-1050
DOI:10.3390/su14127279