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dc.contributor.authorAnglade, Inka
dc.contributor.authorDahl, Thomas
dc.contributor.authorKristensen, Bjørn
dc.contributor.authorHagemann, Andreas
dc.contributor.authorMalzahn, Arne
dc.contributor.authorReitan, Kjell Inge
dc.identifier.citationFrontiers in Marine Science. 2023, 10.en_US
dc.description.abstractIntroduction: Sustainable growth of the salmon aquaculture industry is highly dependent on the availability of new feed resources as well as improved management and utilization of waste streams from production. Polychaetes are capable of recapturing and recycling valuable biomolecules contained in aquaculture sludge and at the same time constitute a possible resource for aquafeeds.en_US
dc.description.abstractMaterial and methods: In this study, the potential of Hediste diversicolor (OF Müller, 1776) to recover nutrients and energy contained aquaculture sludge was evaluated. Hereby, the effect of two different diets, smolt and post-smolt sludge, and different feed levels on polychaete growth, and biochemical and elemental composition was assessed.en_US
dc.description.abstractResults and discussion: Survival ranged from 80-90%, independent of treatment. Specific growth rates at the highest feed levels were significantly higher than at the lowest feed levels and growth was not affected by the type of diet. Similarly, total lipid and total fatty acid content of polychaetes were positively correlated with feed level while the type of diet had a limited effect. Fatty acid composition of polychaetes reflected feed levels: in both diet groups, polychaetes at lower feed levels showed a higher percentage of saturated fatty acids; monounsaturated fatty acids increased with increased feed supply for smolt sludge-fed group and polychaetes fed post-smolt sludge showed increased polyunsaturated fatty acid content with increasing feed levels. Neither diet nor feed levels affected protein content and amino acid composition of polychaetes. In conclusion, H. diversicolor could be successfully cultivated on both smolt and post-smolt sludge and was rich in proteins and lipids as well as essential amino and fatty acids. The species can be considered a promising candidate for recycling valuable nutrients from different types of side streams salmon aquaculture.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleBiochemical composition of Hediste diversicolor (OF Müller, 1776) (Annelida: Nereidae) reared on different types of aquaculture sludgeen_US
dc.title.alternativeBiochemical composition of Hediste diversicolor (OF Müller, 1776) (Annelida: Nereidae) reared on different types of aquaculture sludgeen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2023 Anglade, Dahl, Kristensen, Hagemann, Malzahn and Reitan. Distributed under the terms of the Creative Commons Attribution License (CC BY).en_US
dc.source.journalFrontiers in Marine Scienceen_US

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