Browsing NTNU Open by Author "Reitan, Kjell Inge"
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A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs
Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C; Forbord, Silje; Olsen, Yngvar; Reitan, Kjell Inge; Rustad, Turid; Sandquist, Judit; Solbakken, Roar; Steinhovden, Kristine; Wittgens, Bernd; Wolff, Robert; Handå, Aleksander (Research report, 2014) -
Abundance of planktonic sea lice in intensive sea farm locations at Frøya: January-September 2018
Dimmen, Øystein Vågen (Master thesis, 2019)Lepeiophtheirus salmonis og Caligus elongatus er dei to artane av havlus som som utgjer det største trugsmålet mot lakseoppdrett og villaks i Norge. Spreiing av lusa skjer hovudsakleg i planktoniske stadium. Kunnskap om ... -
An assessment of critical steps in cultivating Palmaria palmata in Norwegian waters
Rydningen, Ylva E.H.; Valla, June (Master thesis, 2022)Makroalger som et bærekraftig alternativ har de siste tiårene fått økt oppmerksomhet da de har vist stort potensiale med mange bruksområder. Rødalgen Palmaria palmata er en av artene som har fått økt fokus grunnet dens ... -
An assessment of critical steps in cultivating Palmaria palmata in Norwegian waters.
Valla, June; Rydningen, Ylva E. H. (Master thesis, 2022)Makroalger som et bærekraftig alternativ har de siste tiårene fått økt oppmerksomhet da de har vist stort potensiale med mange bruksområder. Rødalgen Palmaria palmata er en av artene som har fått økt fokus grunnet dens ... -
An investigation of biofouling and its management in Norwegian salmon aquaculture, and the potential effects on cleaner fish behaviour
Bouwman, Mai-Louise K. (Master thesis, 2020)Det høyfrekvente notvaskregimet i norsk lakseoppdrett, som er sterkt drevet av å sikre avlusningseffekten og appettitten for lus hos rensefisk, har store negative konsekvenser for merdmiljøet, fiskehelse \& velferd og ... -
Apparent nutrient and fatty acid digestibilities of microbial raw materials for rainbow trout (Oncorhynchus mykiss) with comparison to conventional ingredients
Sevgili, Huseyin; Sezen, Soner; Yılayaz, Adil; Aktas, Ozgur; Pak, Faruk; Aasen, Inga Marie; Reitan, Kjell Inge; Sandmann, Michael; Rohn, Sascha; Turan, Gamze; Kanyılmaz, Mahir (Peer reviewed; Journal article, 2019)Determination of apparent digestibility coefficients (ADC) of ingredients has a central importance in formulation of aquaculture diets. Heterotrophic and phototrophic grown microalgae are considered as one of the best ... -
Assimilation of salmon feed and salmon feces by the great scallop (Pecten maximus)
Stensås, Lene (Master thesis, 2014)The primary objective of this Master s thesis was to study if organic waste particles released from cage fish farms could be assimilated by the great scallop (P. maximus) through a laboratory trial and a field trial. In ... -
Biochemical composition of Hediste diversicolor (OF Müller, 1776) (Annelida: Nereidae) reared on different types of aquaculture sludge
Anglade, Inka; Dahl, Thomas; Kristensen, Bjørn; Hagemann, Andreas; Malzahn, Arne; Reitan, Kjell Inge (Peer reviewed; Journal article, 2023)Introduction: 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 ... -
Biochemical composition of Hediste diversicolor cultivated on aquaculture sludge and utilization as a potential fish feed resource
Dahl, Thomas Hagby (Master thesis, 2021)Kultiveringen av atlantisk laks (Salmo salmar) er helt avhengig av marine ressurser av høy kvalitet som fiskemel og fiskeolje. Begrensinger på tilgangen til disse ressursene tvinger industrien til å utnytte alternative ... -
Biofouling on salmon pen nets and cleaner fish shelters does not harbor planktonic stages of sea lice
Jevne, Lone Sunniva; Øvrelid, Margrete Slåtsve; Hagemann, Andreas; Bloecher, Nina; Steinhovden, Kristine; Båtnes, Anna Solvang; Olsen, Yngvar; Reitan, Kjell Inge (Peer reviewed; Journal article, 2020)The objective of the current study was to determine the extent to which planktonic sea lice (Lepeophtheirus salmonis Krøyer, 1838 and Caligus elongatus Nordmann, 1832) were present in the biofouling on open-sea net pens ... -
Bioremediation of aquaculture sludge by cultivation of Hediste diversicolor (O.F. Müller, 1776)
Kristensen, Bjørn Stian Broberg (Master thesis, 2021)Oppdrett av Atlantisk laks (Salmo salar) produserer store mengder organisk partikulært avfall. I motsetning til åpne havmerder, samles det partikulære avfallet som slam ved landbaserte oppdrettsanlegg. Bioremediering av ... -
Bioremediation Potential of the Green Algae Ulva sp. Cultivated in Marine Recirculating Aquaculture Systems (RAS)
Sofie Uttian Alstad (Master thesis, 2022)Ulva er en utbredt grønnalgeslekt som på grunn av dens høye toleranse for ulike temperaturer, vannkvaliteter, næringsnivåer og saltholdigheter har et lovende potensiale når det gjelder opptak av næringsstoffer fra avfallsvann ... -
Characterization of Nitrogen Dynamics in Different Recirculation Systems
Sefranek Rongved, Anna Katharina (Master thesis, 2016)The need to reduce freshwater consumption in global food production has long been recognized. Food production in single- and multi-species recirculation systems offers advantages in terms of reduced water and energy ... -
Characterization of planktonic sea lice distribution and association to fish farm installations
Øvrelid, Margrete Slåtsve (Master thesis, 2017)Lepeoptheirus salmonis (Krøyer 1837) and Caligus elongatus (Normann 1832) are the sea lice species posing the biggest threat to both farmed and wild salmonid stock in the Northern hemisphere today. The three first stages ... -
Characterization of the initial ammonium uptake in Saccharina latissima - Possible implications for cultivation in an IMTA system with intensive salmon farming
Dahlen, Vegard Rønning (Master thesis, 2018)Production of Atlantic salmon (Salmo salar) results in a release of ca. 39% of the total nitrogen content from the feed, which is mainly released as dissolved inorganic nitrogen (DIN), and mainly as the metabolic by product ... -
Characterizing Hydrolicer treatment of Lepeophtheirus salmonis on farmed salmon
Antonsen, Preben (Master thesis, 2021)Lakselusen, Lepeophteirus salmonis, har siden starten av lakseoppdrett vært en utfordring for fiskevelferd og vekst. For å beskytte villaksbestandene og oppdrettslaksen er lakseoppdrettsnæringen i henhold til loven forpliktet ... -
Chemical composition and release rate of waste discharge from an Atlantic salmon farm with an evaluation of IMTA feasibility
Wang, Xinxin; Andresen, Kjersti; Handå, Aleksander; Jensen, Bjørn; Reitan, Kjell Inge; Olsen, Yngvar (Journal article; Peer reviewed, 2013)The carbon (C), nitrogen (N) and phosphorus (P) compositions of salmon feed, fish and faeces were studied at a salmon farm in Badstuvika (63°31’N, 9°9’E) in central Norway. These data were used to estimate the release rates ... -
Chemical composition of selected marine microalgae, with emphasis on lipid and carbohydrate production for potential use as feed resources
Reitan, Kjell Inge; Øie, Gunvor; Jørgensen, Håvard; Wang, Xinxin (Peer reviewed; Journal article, 2021)Marine microalgae are a promising sustainable source of lipids, omega-3 fatty acids, and carbohydrates. Selected microalgae species belonging to the Bacillariophyceae, Haptophyceae, Eustigmatophyceae, and Prasinophyceae ... -
Circular economy for aquatic food systems: insights from a multiscale phosphorus flow analysis in Norway
Pandit, Avijit Vinayak; Dittrich, Nils Maximilian; Strand, Andrea Viken; Lozach, Loïs; Las Heras Hernandez, Miguel; Reitan, Kjell Inge; Mueller, Daniel Beat (Peer reviewed; Journal article, 2023)As wild-caught fish become scarce, feed ingredients for farming fish, such as salmon, are increasingly sourced from agricultural plants that depend on mineral fertilizers. Since these fish are naturally carnivorous, they ... -
Cultivation of Acartia tonsa with 3 different marine microalgae to optimize productivity and nutritional value
Filippusson, Orri (Master thesis, 2018)The conventional method for first feeding of marine fish is to use enriched rotifers (Brachionus spp.) in the beginning and followed with enriched Artemia, before transfer to dry feed. Recent researches have shown that ...