Blar i Bergen Open Research Archive på forfatter "Mikalsen, Bjørn"
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Comparison of diet composition, feeding, growth and health of lumpfish (Cyclopterus lumpus L.) fed either feed blocks or pelleted commercial feed
Imsland, Albert; Reynolds, Patrick; Jonassen, Thor Magne; Hangstad, Thor Arne; Adron, John; Elvegård, Tor Anders; Urskog, Tonje Cecilie; Hanssen, Anna; Mikalsen, Bjørn (Peer reviewed; Journal article, 2019)Two duplicate groups of individually tagged lumpfish (mean initial weight: 21.5 ± 3.2 g) were fed either a commercially available lumpfish feed or feed blocks for a period of 123 days. The aim was to evaluate and compare ... -
Comparison of diet composition, feeding, growth and health of lumpfish (Cyclopterus lumpus L.) fed either feed blocks or pelleted commercial feed
Imsland, Albert; Reynolds, Patrick; Jonassen, Thor Magne; Hangstad, Thor Arne; Adron, John; Elvegård, Tor Anders; Urskog, Tonje Cecilie; Hanssen, Anna; Mikalsen, Bjørn (Peer reviewed; Journal article, 2019)Two duplicate groups of individually tagged lumpfish (mean initial weight: 21.5 ± 3.2 g) were fed either a commercially available lumpfish feed or feed blocks for a period of 123 days. The aim was to evaluate and compare ... -
The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens
Imsland, Albert; Roth, Bjørn; Fjelldal, Per Gunnar; Stefansson, Sigurd Olav; Handeland, Sigurd Olav; Mikalsen, Bjørn (Peer reviewed; Journal article, 2017-10)The aim of this study was to investigate the effect of continuous light of different duration, applied from late autumn to spring in the second year of the production cycle, on the production performance of Atlantic salmon ... -
Effects of different feeding frequencies on growth, cataract development and histopathology of lumpfish (Cyclopterus lumpus L.)
Imsland, Albert; Reynolds, Patrick; Jonassen, Thor Magne; Hangstad, Thor Arne; Elvegård, Tor Anders; Urskog, Tonje Cecilie; Hanssen, Anna; Mikalsen, Bjørn (Peer reviewed; Journal article, 2019)Three duplicate groups of individually tagged lumpfish (mean initial weight: 22.3 ± 2.5 g) were fed either daily (7DW); four days per week (4DW) or three days per week (3DW) at a feeding rate of 2% body weight day−1 for a ... -
Flesh quality of Atlantic salmon smolts reared at different temperatures and photoperiods
Imsland, Albert; Roth, Bjørn; Døskeland, Inge; Fjelldal, Per Gunnar; Stefansson, Sigurd Olav; Handeland, Sigurd O; Mikalsen, Bjørn (Peer reviewed; Journal article, 2019)Possible interactive effects of temperature and photoperiod on flesh quality in Atlantic salmon post‐smolts were studied. Juvenile (initial mean weight 96.0 g ± 3.1 SEM ) Atlantic salmon were reared at six different ... -
The use of photoperiods to provide year round spawning in lumpfish Cyclopterus lumpus
Imsland, Albert; Hangstad, Thor Arne; Jonassen, Thor Magne; Stefansson, Sigurd Olav; Nilsen, Tom Ole; Hovgaard, Peter; Elvegård, Tor Anders; Lindberg, Ken Ståle; Mikalsen, Bjørn; Urskog, Tonje Cecilie; Norberg, Birgitta; Andersson, Eva; Spetland, Frank; Reynolds, Patrick (Peer reviewed; Journal article, 2019)In order to provide year round spawning broodstock, lumpfish (initial size 746 g and 24.9 cm) were reared under four different photoperiod regimes from January 2017 to July 2018. One group was reared under simulated natural ...