Browsing Nord Open Research Archive by Author "Hagen, Ørjan"
Now showing items 1-16 of 16
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Digestive tract morphology and enzyme activities of juvenile diploid and triploid Atlantic salmon (Salmo salar) fed fishmealbased diets with or without fish protein hydrolysates
Martinez-Llorens, Silvia; Peruzzi, Stefano; Falk-Petersen, Inger-Britt; Godoy-Olmos, Sergio; Ulleberg, Lars Olav; Tomas-Vidal, Ana; Puvanendran, Velmurugu; Odei, Derrick Kwame; Hagen, Ørjan; Fernandes, Jorge Manuel de Oliveira; Jobling, Malcolm (Peer reviewed; Journal article, 2021)Triploid, sterile Atlantic salmon (Salmo salar) could make a contribution to the development of the farming industry, but uncertainties about the performance and welfare of triploids have limited their adoption by farmers. ... -
Growth and development of juvenile spotted wolffish (Anarhichas minor) fed microalgae incorporated diets
Knutsen, Helene Rønquist (PhD in Aquatic Biosciences;no. 30, Doctoral thesis, 2019) -
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
Peruzzi, Stefano; Puvanendran, Velmurugu; Riesen, Guido; Ripman Seim, Rudi; Hagen, Ørjan; Martinez-Llorens, Silvia; Falk-Petersen, Inger-Britt; Fernandes, Jorge Manuel de Oliveira; Jobling, Malcolm (Journal article; Peer reviewed, 2018)Diploid and triploid Atlantic salmon, Salmo salar were fed high-protein, phosphorus-rich diets (56–60% protein; ca 18g phosphorus kg-1 diet) whilst being reared at low temperature from start-feeding until parr-smolt ... -
Growth and gut morphology of diploid and triploid juvenile Atlantic cod (Gadus morhua)
Vargas, Cecilia Campos; Hagen, Ørjan; Solberg, Christel; Jobling, Malcolm; Peruzzi, Stefano (Journal article; Peer reviewed, 2014) -
Growth and muscle cellularity of diploid and triploid Atlantic cod (Gadus morhua Linnaeus, 1758) larvae
Vargas, Cecilia Campos; Peruzzi, Stefano; Hagen, Ørjan (Journal article; Peer reviewed, 2015) -
Growth performance, fast muscle development and chemical composition of juvenile lumpfish (Cyclopterus lumpus) fed diets incorporating soy and pea protein concentrates
Willora, Florence Perera; Nadanasabesan, Nimalan; Knutsen, Helene Rønquist; Liu, Cui; Mette, Sørensen; Hagen, Ørjan (Peer reviewed; Journal article, 2020)Lumpfish (Cyclopterus lumpus) are widely applied as biological delousers in open net-pen farming of Atlantic salmon. As a species new to farming it is necessary to obtain a comprehensive understanding of the capacity of ... -
Gut morphology of diploid and triploid Atlantic salmon (Salmo salar L.)
Peruzzi, Stefano; Hagen, Ørjan; Jobling, Malcolm (Journal article; Peer reviewed, 2014) -
Muscle growth and changes in chemical composition of spotted wolffish juveniles (Anarhichas minor) fed diets with and without microalgae (Scenedesmus obliquus)
Knutsen, Helene Rønquist; Ottesen, Oddvar Harald; Palihawadana, Anjana Mahesh; Sandaa, Willy; Sørensen, Mette; Hagen, Ørjan (Journal article; Peer reviewed, 2018) -
Muscle growth of triploid Atlantic cod juveniles (Gadus morhua)
Vargas, Cecilia Campos; Peruzzi, Stefano; Palihawadana, Anjana; Ottesen, Oddvar; Hagen, Ørjan (Journal article; Peer reviewed, 2015) -
The potential of plant ingredients in diets of juvenile lumpfish (Cyclopterus lumpus)
Willora, Florence Perera (PhD in Aquatic Biosciences;no. 35, Doctoral thesis, 2020) -
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.
Willora, Florence Perera; Vatsos, Ioannis N.; Mallioris, Panagiotis; Bordignon, Francesco; Keizer, Sven; Martinez-Llorens, Silvia; Sørensen, Mette; Hagen, Ørjan (Peer reviewed; Journal article, 2022)This study investigated the effects of plant protein concentrates on the activity of digestive enzymes and microscopic structure of the intestine of juvenile lumpfish. The experiment was carried out using triplicate groups ... -
The importance of exercise : Increased water velocity improves growth of Atlantic salmon in closed cages
Nilsen, Arve; Hagen, Ørjan; Johnsen, Chris André; Prytz, Halvor; Zhou, Bingfei; Nielsen, Kristoffer Vale; Bjørnevik, Marit (Journal article; Peer reviewed, 2018)There is increasing concern about Norwegian salmon farming and the possible environmental impacts from sea lice, escaped fish and release of toxic chemicals and organic emissions to the coastal waters. Closed containment ... -
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
Willora, Florence Perera; Grønevik, Bjørn; Liu, Cui; Palihawadana, Anjana Mahesh; Sørensen, Mette; Hagen, Ørjan (Peer reviewed; Journal article, 2020)Lumpfish is used to control sea lice in open net-pen farming of Atlantic salmon, but little is known about their nutritional requirements. The aim of this study was to investigate the effects of replacing marine oil (MO) ... -
Transcriptome sequencing and histology reveal dosage compensation in the liver of triploid pre-smolt Atlantic salmon
Odei, Derrick Kwame; Hagen, Ørjan; Peruzzi, Stefano; Falk-Petersen, Inger-Britt; Fernandes, Jorge Manuel de Oliveira (Peer reviewed; Journal article, 2020)Triploid Atlantic salmon (Salmo salar L.) is seen as one of the best solutions to solve key issues in the salmon farming industry, such as the impact of escapees on wild stocks and pre-harvest sexual maturation. However, ... -
Unravelling Spermatogenesis in Spotted Wolffish: Insights from the Ultrastructure of Juvenile Male Testes to the Cryopreservation of Broodstock Sperm
Superio, Joshua Lustracion; Resseguier, Julien Alain Andre; Henrique Nobrega, Rafael; Grebstad, Caroline M.; fakriadis, Ioannis; Foss, Atle; Hagen, Ørjan; Zhang, Meiling; Garcia-Hernandez, M.P.; Galindo-Villegas, Jorge (Peer reviewed; Journal article, 2024)This study aimed to deepen our understanding of the reproductive biology of male spotted wolffish (Anarhichas minor) using two different experimental approaches involving juvenile and mature broodstock fish. The first ... -
Whole-genome re-sequencing provides key genomic insights in farmed Arctic charr (Salvelinus alpinus) populations of anadromous and landlocked origin from Scandinavia
Pappas, Fotis; Kurta, Khrystyna; Vanhala, Tytti; Jeuthe, Henrik; Hagen, Ørjan; Beirão, José; Palaiokostas, Christos (Peer reviewed; Journal article, 2023)