Ørjan Hansen Hagen
Associate Professor
Faculty of Biosciences and Aquaculture
Jobber for tiden som førsteamanuensis ved fakultet for biovitenskap og akvakultur (FBA). Bidrar med undervisning og veiledning på bachelor, master og PhD nivå i tillegg til egen forskning innen akvakultur (fôr, ernæring, sjømatkvalitet og muskelvekst og utvikling).
Ansvarlig eller bidrar inn i undervisningen av følgende emner:
Hav 2015 - Fiskeernæring og produktkvalitet
Hav 2015 - Marine arter i oppdrett
PRA 2005 - Praksis i havbruksnæringen
BI 127F - Produksjonsbiologi
AK 322F - Fiskemuskelkvalitet
Forskning innen fagområdene:
- Sjømatkvalitet
- Fôr og ernæring hos fisk
- Fôrråstoff til fiskefôr
- Utvikling og tilvekst hos tidlige stadier av fisk
2024
Unravelling spermatogenesis in spotted wolffish: Insights from the ultrastructure of juvenile male testes to the cryopreservation of broodstock sperm 2024 Aquaculture - Joshua Lustracion Superio, Julien Alain Andre Resseguier, Rafael Henrique Nobrega, Caroline Maylinn Grebstad, Ioannis Fakriadis, Atle Foss, Ørjan Hagen, Meiling Zhang, M.P. Garcia-Hernandez, Jorge Galindo-Villegas
Genetic diversity insights from population genomics and machine learning tools for Nordic Arctic charr (Salvelinus alpinus) populations 2024 Aquaculture Reports - Christos Palaiokostas, Khrystyna Kurta, Fotis Pappas, Henrik Jeuthe, Ørjan Hagen, Jose Beirao Dos Santos, Matti Janhunen, Antti Kause
2023
Whole-genome re-sequencing provides key genomic insights in farmed Arctic charr (Salvelinus alpinus) populations of anadromous and landlocked origin from Scandinavia 2023 Evolutionary Applications - Fotis Pappas, Khrystyna Kurta, Tytti Vanhala, Henrik Jeuthe, Ørjan Hagen, Jose Beirao Dos Santos, Christos Palaiokostas
2022
Replacement of fishmeal with plant protein in the diets of juvenile lumpfish (Cyclopterus lumpus, L. 1758): Effects on digestive enzymes and microscopic structure of the digestive tract 2022 Aquaculture - Florence Chandima Perera Willora Arachchilage, Ioannis Vatsos, Panagiotis Mallioris, Bordignon Francesco, Sven Keizer, Silvia Martinez-Llorens, Mette Sørensen, Ørjan Hagen
2021
Digestive tract morphology and enzyme activities of juvenile diploid and triploid Atlantic salmon (Salmo salar) fed fishmealbased diets with or without fish protein hydrolysates 2021 PLOS ONE - Silvia Martinez-Llorens, Stefano Peruzzi, Inger Britt Falk-Petersen, Sergio Godoy-Olmos, Lars Olav Ulleberg, Ana Tomas-Vidal, Velmurugu Puvanendran, Derrick Kwame Odei, Ørjan Hagen, Jorge Manuel de Oliveira Fernandes, Malcolm Jobling
2020
The potential of plant ingredients in diets of juvenile lumpfish (Cyclopterus lumpus) 2020 - Florence Chandima Perera Willora Arachchilage, Ørjan Hagen, Mette Sørensen
Transcriptome sequencing and histology reveal dosage compensation in the liver of triploid pre-smolt Atlantic salmon 2020 Scientific Reports - Derrick Kwame Odei, Ørjan Hagen, Stefano Peruzzi, Inger-Britt Falk-Petersen, Jorge Manuel de Oliveira Fernandes
Growth performance, fast muscle development and chemical composition of juvenile lumpfish (Cyclopterus lumpus) fed diets incorporating soy and pea protein concentrates 2020 Aquaculture Reports - Florence Chandima Perera Willora Arachchilage, Nimalan Nadanasabesan, Helene Rønquist Knutsen, Cui Liu, Mette Sørensen, Ørjan Hagen
Total replacement of marine oil by rapeseed oil in plant protein rich diets of juvenile lumpfish (Cyclopterus lumpus): Effects on growth performance, chemical and fatty acid composition 2020 Aquaculture Reports - Florence Chandima Perera Willora Arachchilage, Bjørn Frode Grønevik, Cui Liu, Anjana Mahesh Palihawadana, Mette Sørensen, Ørjan Hagen
2019
Muscle growth and changes in chemical composition of spotted wolffish juveniles (Anarhichas minor) fed diets with and without microalgae (Scenedesmus obliquus) 2019 Aquaculture Reports - Helene Rønquist Knutsen, Oddvar Harald Ottesen, Anjana Mahesh Palihawadana, Willy Sandaa, Mette Sørensen, Ørjan Hagen
The importance of exercise: Increased water velocity improves growth of Atlantic salmon in closed cages. 2019 Aquaculture - Arve Nilsen, Ørjan Hagen, Chris André Johnsen, Halvor Prytz, Bingfei Zhou, Kristoffer Vale Nielsen, Marit Bjørnevik
Fish welfare, fast muscle cellularity, fatty acid and body-composition of juvenile spotted wolffish (Anarhichas minor) fed a combination of plant proteins and microalgae (Nannochloropsis oceanica) 2019 Aquaculture - Helene Rønquist Knutsen, Ingeborg Helene Johnsen, Sven Keizer, Mette Sørensen, Jonathan AC Roques, Ida Hedén, Kristina Snuttan Sundell, Ørjan Hagen
2018
Growth and development of skeletal anomalies in diploid and triploid Atlantic salmon (Salmo salar) fed phosphorus-rich diets with fish meal and hydrolyzed fish protein 2018 PLOS ONE - Stefano Peruzzi, Velmurugu Puvanendran, Guido Riesen, Rudi Ripman Seim, Ørjan Hagen, Silvia Martinez-Llorens, Inger-Britt Falk-Petersen, Jorge Manuel de Oliveira Fernandes, Malcolm Jobling
2017
Muscle growth of triploid Atlantic cod juveniles (Gadus morhua) 2017 Aquaculture Research - Cecilia Campos Vargas, Stefano Peruzzi, Anjana Palihawadana, Oddvar Ottesen, Ørjan Hagen
2016
Growth and gut morphology of diploid and triploid juvenile Atlantic cod (Gadus morhua) 2016 Aquaculture Research - Cecilia Vargas, Ørjan Hagen, Christel Solberg, Malcolm Jobling, Stefano Peruzzi
2015
Gut morphology of diploid and triploid Atlantic salmon (Salmo salar L.) 2015 Aquaculture International - Stefano Peruzzi, Ørjan Hagen, Malcolm Jobling
Growth and muscle cellularity of diploid and triploid Atlantic cod (Gadus morhua Linnaeus, 1758) larvae 2015 Journal of Applied Ichthyology - Cecilia Vargas, Stefano Peruzzi, Ørjan Hagen
2013
Seasonal changes in muscle structure and flesh quality of 0+ and 1+ Atlantic salmon (Salmo salar L.): impact of feeding regime and possible roles of ghrelin 2013 Aquaculture Nutrition - Chris André Johnsen, Ørjan Hagen, Christel Solberg, Björn Thrandur Björnsson, Elisabeth Jönsson, Sten Johan Sverre Johansen, Eldar Åsgard Bendiksen
2012
Production of sterile Atlantic cod: A way to satisfy industrial and environmental criteria? Cultivating Diversity and Success - Proceedings of Contributed Papers - AAC Special Publication No 20 2012 - Stefano Peruzzi, Inger-Britt Falk-Petersen, Ingrid Lein, Velmurugu Puvanendran, Ørjan Hagen, Malcolm Jobling
2011
Effects of feed, feeding regime and growth rate on flesh quality, connective plasma hormones in farmed Atlantic salmon (Salmo salar L.) 2011 Aquaculture - Chris André Johnsen, Ørjan Hagen, Michael Adler, Elisabeth Jönsson, Peter Kling, Ralph Bickerdike, Christel Solberg, Björn Thrandur Björnsson, Eldar Åsgard Bendiksen
Flesh quality and growth characteristics of farmed Atlantic salmon (Salmo salar L.) in relation to feed, feeding, smolt type and season 2011 - Chris André Johnsen, Christel Solberg, Ørjan Hagen, Eldar Åsgard Bendiksen
Long-term effects of high-energy, low-fishmeal feeds on growth and flesh characteristics of Atlantic salmon (Salmo salar L.) 2011 Aquaculture - Chris Andre Johnsen, Ørjan Hagen, Eldar Å. Bendiksen
2009
Expression of growth-related genes in muscle during fasting and refeeding of juvenile Atlantic halibut, Hippoglossus hippoglossus L 2009 Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology - Ørjan Hagen, Jorge Fernandes, Christel Solberg, Ian Johnston
2008
Selection of suitable reference genes for real-time PCR studies of Atlantic halibut development 2008 Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology - Jorge Fernandes, Maren Mommens, Ørjan Hagen, Igor Babiak, Christel Solberg
Myotube production in fast myotomal muscle is switched-off at shorter body lengths in male than female Atlantic halibut Hippoglossus hippoglossus (L.) resulting in a lower final fibre number 2008 Journal of Fish Biology - Ørjan Hagen, Vera Vieira, Christel Solberg, Ian A. Johnston
Activity of aspargate (cathepsin D), cysteine proteases (cathepsins B, B+L, and H), and matrix metallopeptidase (collagenase) and their influence on protein and water-holding capacity of muscle in commercially farmed Atlantic halibut (Hippoglossus hippoglossus L.) 2008 Journal of Agricultural and Food Chemistry - Ørjan Hagen, Christel Solberg, Ian Johnston
2007
Biochemical and Structural factors contributing to seasonalvariation in the texture of farmed Atlantic halibut (Hippoglossus hippoglossus L.) Flesh 2007 Journal of Agricultural and Food Chemistry - Ørjan Hagen, Christel Solberg, Ellen Sirnes, Ian A. Johnston
2006
Sexual dimorphism of fast muscle fibre recruitment in farmed Atlantic halibut (Hippoglossos hippoglossus L.) 2006 Aquaculture - Ørjan Hagen, Christel Solberg, Ian A. Johnston
2024
UNRAVELING SPERMATOGENESIS IN SPOTTED WOLFFISH: INSIGHTS FROM
JUVENILE MALE TESTES ULTRASTRUCTURE TO BROODSTOCK SPERM
CRYOPRESERVATION 2024 AQUA 2024 - Joshua Lustracion Superio, Julien Alain Andre Resseguier, Rafael Henrique Nóbrega, Caroline M. Grebstad, Ioannis Fakriadis, Atle Foss, Ørjan Hagen, Meiling Zhang, Maria del Pilar Hernández-García, Jorge Galindo-Villegas
2022
Start-feeding of wolffish larvea using different level of shrimp and squid as chemo-attractants 2022 European Aquaculture Society - Sodiya Khiyan, James Hinchcliffe, Elisabeth Jönsson Bergmann, Ørjan Hagen
2021
Potential of plant protein ingredients in the diets of juvnile lumpfish (Cyclopterus lumpus) 2021 norske fiskeernæringsseminar - Florence Chandima Perera Willora Arachchilage, Mette Sørensen, Ørjan Hagen
2019
LIVER TRANSCRIPTOME OF JUVENILE DIPLOID AND TRIPLOID
ATLANTIC SALMON (SALMO SALAR L.) 2019 Aquaculture Europe - Derrick Kwame Odei, Stefano Peruzzi, Ørjan Hagen, Jorge Manuel de Oliveira Fernandes
The effect of total replacement of the fish oil with rapeseed oil on growth, body composition and gut health of juvenile lumpfish 2019 Aquaculture Europe 2019 - Florence Chandima Perera Willora Arachchilage, Ørjan Hagen, Mette Sørensen
The potential of plant ingredients in diets for juvenile lumpfish 2019 Rognkjeksforumsmøte - Florence Perera Willora, Mette Sørensen, Ørjan Hagen
The potential of plant protein ingredients in diets for juvenile lumpfish 2019 Nord Global - Florence Chandima Perera Willora Arachchilage, Ørjan Hagen, Mette Sørensen
2018
Atlantic salmon in closed containment systems (CCS) 2018 8th International symposium on aquatic animal health - Arve Nilsen, Eirik Biering, Kristoffer Vale Nielsen, Asbjørn Bergheim, Marit Bjørnevik, Ørjan Hagen, Chris André Johnsen, Bingfei Zhou, Anders Næss
2017
Microalgae and terrestrial ingredients in Feed for Spotted Wolffish 2017 Aquaculture Europe 2017 - A.K Ulset, I.H. Johnsen, Helene Rønquist Knutsen, O.H Ottesen, Mette Sørensen, Ioannis Vatsos, S Keizer, Willy Sandaa, Ørjan Hagen
Dietary effects on gut transcriptome of diploid and triploid Atlantic salmon Salmo salar 2017 Aquaculture Europe 2017 - Derrick Odei, Jorge Manuel de Oliveria Fernandes, Ørjan Hagen, Stefano Peruzzi, Velmurugu Puvanendran, Guido Riesen, Rudi Ripman Seim, Silvia Martinez-Llorens, Inger-Britt Falk-Petersen, Malcolm Jobling
Growth of diploid and triploid Atlantic salmon (Salmo salar) fed a standard diet and an experimental diet containing high proportions of hydrolysed proteins. 2017 Aquaculture Europe 2017 - Stefano Peruzzi, Velmurugu Puvanendran, Ørjan Hagen, D Kwame Odei, Guido Riesen, Rudi Ripman Seim, Silvia Martinez-Llorens, Inger-Britt Falk-Petersen, Jorge Fernandes, Malcolm Jobling
Hagen, Ø., Kwame Odei, D., Riesen, G., Ripman Seim, R., Fernandes, J.M.O. and Jobling M. (2017). Effects of triploidization on digestive enzyme activities and histology of Atlantic salmon (Salmo salar) fed two different diets. 2017 Aquaculture Europe 2017 - S Godoy-Olmos, Silvia Martinez-Llorens, Inger-Britt Falk-Petersen, Lars-Olav Ulleberg, G Estruch-Cucarella, A Tomás-Vidal, Stefano Peruzzi, Velmurugu Puvanendran, Ørjan Hagen, D Kwame Odei, Guido Riesen, Rudi Ripman Seim, Jorge Fernandes, Malcolm Jobling
Differences in gut transcriptome profiles between diploid and triploid Atlantic salmon (Salmo salar). 2017 Aquaculture Europe 2017 - D Kwame Odei, Jorge Fernandes, Ørjan Hagen, Stefano Peruzzi, Velmurugu Puvanendran, Guido Riesen, Rudi Ripman Seim, Silvia Martinez-Llorens, Inger-Britt Falk-Petersen, Malcolm Jobling
GROWTH OF JUVENILE DIPLOID AND TRIPLOID SALMON (Salmo salar) FED A STANDARD DIET AND AN EXPERIMENTAL DIET CONTAINING HIGH PROPORTIONS OF HYDROLISED PROTEINS. 2017 World Aquculture 2017 - Sustainable Aquaculture New Frontiers for Economic Growth - Velmurugu Puvanendran, Stefano Peruzzi, Inger-Britt Falk-Petersen, Lars-Olav Ulleberg, fride Tonning, Ørjan Hagen, Jorge Fernandes, Silvia Llorens Martinez, Guido Riesen, Rudi Ripman Seim
The effect of total replacement of the fish oil with rapeseed oil on growth, body composition and gut health of juvenile lumpfish 2017 Aquaculture Europe 2017 - Florence Perera Willora, Mette Sørensen, Ørjan Hagen
2016
Swimming speed affects growth in Atlantic salmon in closed cage. 2016 Aquaculture Europe - Marit Bjørnevik, Bingfei Zhou, Ørjan Hagen, Chris André Johnsen, Elisabeth Karlsen, Anders Næss, Asbjørn Bergheim, Arve Nilsen
Microalgae as an alternative feed ingredient for the spotted wolffish in aquaculture 2016 Aquaculture Europe 2016 - Helene Rønquist Knutsen, Willy Sandaa, Oddvar Harald Ottesen, Mette Sørensen, Ørjan Hagen
2014
Does ploidy affect gut morphology of farmed fish? Evidence from Atlantic cod (Gadus morhua) and Atlantic salmon (Salmo salar) 2014 Aquaculture Europe 2014 - Stefano Peruzzi, Ørjan Hagen, Cecilia Vargas, Inger-Britt Falk-Petersen, Malcolm Jobling
PERFORMANCE OF DIPLOID AND TRIPLOID ATLANTIC COD (Gadus morhua): A COMPARATIVE STUDY 2014 World Aquaculture Adelaide 2014 - Ørjan Hagen, Cecilia Vargas, Christel Solberg, Stefano Peruzzi
2013
EFFECTS OF TRIPLOIDIZATION ON GROWTH AND GUT MORPHOLOGY OF ATLANTIC COD (Gadus morhua) JUVENILES 2013 ASIA PACIFIC AQUACULTURE 2013 - Cecilia Olsen, Ørjan Hagen, Christel Solberg, Stefano Peruzzi
Muscle growth of triploid Atlantic cod (Gadus morhua)juveniles 2013 ASIA PACIFIC AQUACULTURE 2013 - Cecilia Olsen, Stefano Peruzzi, Oddvar Ottesen, Christel Solberg, Ørjan Hagen
Performance of juvenile triploid cod – a comparative study 2013 Sats Marint Conference 2013. Sats på torsk - The cod network conference. - Cecilia Olsen, Ørjan Hagen, Stefano Peruzzi, Christel Solberg
Muscle growth of triploid Atlantic cod larvae 2013 Larvi 2013 – 6th fish and shellfish larviculture symposium - Cecilia Olsen, Ørjan Hagen, Stefano Peruzzi, Christel Solberg
2012
Effects of feed, feeding regime and growth rate on flesh quality in farmed Atlantic salmon: function of fast-muscle collagen cross-links and plasma hormones 2012 XV ISFNF 2012 - Chris André Johnsen, Ørjan Hagen, Michael Adler, Elisabeth Jönsson, Peter Kling, Ralph Bickerdike, Christel Solberg, Björn Thrandur Björnsson, Eldar Åsgard Bendiksen
2011
Effects of feed, feeding regime and growth rate on flesh quality, collagen cross-links and plasma hormones in farmed Atlantic salmon 2011 41st WEFTA Meeting - Chris André Johnsen, Ørjan Hagen, Michael Adler, Elisabeth Jönsson, Peter Kling, Ralph Bickerdike, Christel Solberg, Björn Thrandur Björnsson, Eldar Åsgard Bendiksen
An investigation of the biochemical mechanisms behind the loss of texture during ice storage of Atlantic cod (Gadus morhua L.) 2011 Pacific Fisheries Technologists Conference - Ørjan Hagen, Perera Florence, Christel Solberg
Muscle development and growth of juvenile Atlantic cod (Gadus morhua) fed marine micro alga as an alternative protein source 2011 Sats på torsk - Biswas Bajgai, Ørjan Hagen, Mark Huntley, Kiron Viswanath
Quality changes during frozen storage of farmed Atlantic salmon (Salmo salar L.) 2011 Pacific Fisheries Technologists Conference - Anjana Palihawadana, Ørjan Hagen, Marit Bjørnevik, Christel Solberg
Quality changes during frozen storage of farmed Atlantic salmon (Salmo salar L.) 2011 WEFTA - Anjana Palihawadana, Ørjan Hagen, Christel Solberg, Marit Bjørnevik
Production of sterile Atlantic cod: A way to satisfy industrial and environmental criteria? 2011 Proceedings of Aquaculture Canada 2011 - Stefano Peruzzi, Inger-Britt Falk-Petersen, Ingrid Lein, Ørjan Hagen, Malcolm Jobling
2010
Fast i fisken med hydroksyprolin 2010 NCE Aquaculture - Sissel Albrektsen, Ellen Sirnes, Anders Aksnes, Ørjan Hagen
Impacts of dietary hydroxyproline on growth, muscle firmness, collagen avd PYD cross-links formation in Atlantic salmon (Salmo salar) 2010 XIV International Symposium on Fish nutrition and Feeding - Sissel Albrektsen, Ellen Sirnes, Anders Aksnes, Ørjan Hagen
Impacts of dietary hydroxyproline on growth, muscle firmness, collagen avd PYD cross-links formation in Atlantic salmon (Salmo salar) 2010 NFR Havbruk konferanse - Sissel Albrektsen, Ellen Sirnes, Anders Aksnes, Ørjan Hagen