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Økt verdiskapning og standardisering av hvitfiskmel basert på restråstoff om bord i norske fabrikktrålere
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Ringvirkningsanalyse av villfiskindustrien i Norge
No full textI 2023 ble det landet 2,5 millioner tonn fisk i Norge til en førstehåndsverdi på 34,5 milliarder kroner. Dette var omtrent samme volum som de to årene før, men en betydelig verdiøkning siden 2021, da førstehåndsverdien var på 27 milliarder. Verdiøkningen skyldes økte priser for viktige fiskeslag, som torsk og makrell, i kombinasjon med en svekket norsk krone. Stor sysselsetting, stor verdiskaping. Landingene ga grunnlag for en sysselsetting i den villfiskbaserte fiskeindustrien på 9 800 sysselsatte i 2023, noe som også bidro til en verdiskaping på 7,3 milliarder kroner. Fiskeindustrien gir også ringvirkninger i andre deler av næringslivet gjennom kjøp av varer og tjenester hos sine leverandører, deres leverandørers innkjøp, og så videre. Vi estimerer at den villfiskbaserte industrien sine innkjøp knyttet både til ordinær drift og investeringer skapte ringvirkninger i Norge tilsvarende 6 500 sysselsatte og 6,7 milliarder kroner i verdiskaping.Ringvirkningsanalyse av villfiskindustrien i NorgepublishedVersio
Effects of n-3 very-long-chain PUFA on bone mineralisation
Get PDFThe present study investigated whether dietary n-3 very-long-chain PUFA (n-3 VLC-PUFA) could increase skin and bone mineralisation in Atlantic salmon (Salmo salar) in vivo and examined their potential effects on human osteoblast proliferation and differentiation in vitro. Atlantic salmon were fed different dietary levels of n-3 VLC-PUFA, and changes in tissue n-3 VLC-PUFA composition, skeletal morphology, skin and bone mineral content, bone mineral density (BMD) and gene expression patterns were examined. Additionally, in vitro experiments using human foetal osteoblast cells were conducted to investigate the potential influence of n-3 VLC-PUFA supplementation on cell proliferation, osteogenic differentiation and cytokine expression. The results demonstrated that increasing the dietary levels of n-3 VLC-PUFA increased the mineral content of vertebrae and BMD in salmon, with subtle yet significant impacts on the expression of genes involved in bone-related processes. Furthermore, in vitro experiments showed a potential contextual influence of n-3 VLC-PUFA supplementation on gene expression of osteogenic markers and cytokine expression. Our findings indicate for the first time that n-3 VLC-PUFA may influence processes related to bone mineralisation.publishedVersio
Gut microbiota, physical activity and/or metabolic markers in healthy individuals - towards new biomarkers of health
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Bedre utnyttelse av restråstoffet - kommersialisering og bidrag til økt verdiskapning
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Kvalitet og fangstskader målt med Maritech Eye-automatisk kvalitetskontroll
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Critical review of cultivated meat from a Nordic perspective
No full textBackground: Cultivated meat is a novel technology with the potential to partly substitute conventional meat in the future. Production of cultivated meat is based on biotechnology for tissue engineering, up-scaling of cell cultures and stem-cell differentiation, providing the basis for large-scale proliferation of the parent cell and subsequent differentiation into primitive skeletal muscle structures known from conventional meat. Development of cultivated meat is considered a socio-technological challenge including a variety of technical, sustainability, ethical, and consumer acceptance issues. Scope and approach: As the Nordic countries share common history and roots of food culture, cultivated meat will be introduced into a socio-cultural context with established food traditions. This review summarizes the current knowledge and activities on the development of cultivated meat in the Nordic countries and considers this novel food product in a specific socio-cultural context. Key findings and conclusions: The production of cultivated meat in the Nordic countries, must encompass solutions that are accepted by the typical Nordic consumer. In general, this favors solutions for cell culturing based on non-GMO cells and locally accessible raw material for cell medias and scaffolding. From the perspective of the Nordic countries, this will improve the environmental, societal, and ethical context of cultivated meat.publishedVersio
Genome-assisted prediction of amoebic gill disease resistance in different populations of Atlantic salmon during field outbreak
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Smoltification, seawater performance, and maturation in Atlantic salmon (Salmo salar) fed different fat levels
Get PDFThe use of recirculating aquaculture systems (RAS) to produce Atlantic salmon smolts has resulted in exceptionally high fish growth rates. However, there are potential negative trade-offs between fast growth and key physiological processes, such as inadequate smoltification and early sexual maturation, which can both be linked to body energy reserves. This study determined the effect of i) dietary fat levels on Atlantic salmon whole-body fat and fatty acids composition, growth performance and smoltification and ii) a previous dietary regime on seawater growth performance and male early sexual maturation. In freshwater RAS, salmon parr (~19g) were fed 3 fat levels (20, 24, and 28%) over a 14-week period at 12℃. Subsequently, in seawater flow-through systems, smolt (~96g) were fed a control diet (26%) for 12 weeks at 2 temperatures (12 and 16℃). Dietary fat levels resulted in differences in k-factor, fish whole-body fat and fatty acids composition; the low fat diet resulted in fish with a 23% lower whole-body fat when compared to the other two dietary groups at the end of the freshwater phase. These differences in whole-body fat faded at the end of the seawater phase. During the freshwater phase, all three feeds resulted in a comparable growth performance and smoltification indicator values, including k-factor, gill Na+, K+-ATPase, blood serum chloride and smolt index score. In contrast, water temperature resulted in fish body weight differences, where groups reared at 16℃ were larger than those reared at 12℃. Nevertheless, both temperature regimes supported a similar thermal growth coefficient. Smolts grown at 16℃ showed a higher level of the sex steroids androstenedione compared to those at 12℃. However, 11-ketotestosterone and testosterone levels did not differ despite a trend for higher levels at 16℃. Furthermore, testis histology at the final sampling indicated that some individuals showed initial signs of maturation (stage 3). In conclusion, varying dietary fat levels (20 - 28%) during the freshwater phase did not influence smoltification or male early sexual maturation during the subsequent grow-out phase. However, a temperature increase from 12 to 16°C resulted in larger fish and appeared to stimulate early male maturation in some fish individuals.Smoltification, seawater performance, and maturation in Atlantic salmon (Salmo salar) fed different fat levelspublishedVersio
Vaksinering for forbedret immunitet og beskyttelse mot tenacibaculose hos atlantisk laks (ResisT)
Get PDFSårutvikling forårsaket av bakterielle infeksjoner på laks i sjø representerer et vedvarende problem for norsk lakseoppdrett. Sårutbrudd assosiert med Tenacibaculum finnmarkense (tenacibaculose) kjennetegnes ved sår på hodet, kjeven, inkludert finne- og haleråte og kan gi akutt dødelighet. Tenacibaculose er spesielt problematisk for nylig overført smolt, og det er ingen effektiv vaksine tilgjengelig. Prosjektet hadde som mål å undersøke effekten av å bruke rekombinante proteiner fra T. finnmarkense for å indusere beskyttelse mot sykdommen. Resultatene viser at immunisering ved injeksjon, men ikke nese- eller badeksponering, økte antistoffresponsen hos fisken. Vi utførte også smitteforsøk som bekreftet en beskyttende effekt med redusert dødelighet hos immunisert fisk. Disse funnene viser at rekombinant proteinteknologi er en mulig strategi for å utvikle en vaksine mot tenacibaculose i laksefisk.Vaksinering for forbedret immunitet og beskyttelse mot tenacibaculose hos atlantisk laks (ResisT)publishedVersio