Blar i Brage IMR på forfatter "Olsen, Rolf Erik"
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Får oppdrettslaks nok oksygen?
Remen, Mette; Oppedal, Frode; Stien, Lars Helge; Torgersen, Thomas; Olsen, Rolf Erik (Havforskningstema;1-2013, Working paper, 2013) -
Feeding preference of recaptured Atlantic salmon Salmo salar following simulated escape from fish pens during autumn
Olsen, Rolf Erik; Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)Escapes of farmed fish from coastal farms around the world are believed to have genetic and ecological consequences for wild fish populations. Each year there are numerous escapes of adult farmed Atlantic salmon Salmo ... -
Feeding preference of recaptured Atlantic salmon Salmo salar following simulated escape from fish pens during autumn
Olsen, Rolf Erik; Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)Escapes of farmed fish from coastal farms around the world are believed to have genetic and ecological consequences for wild fish populations. Each year there are numerous escapes of adult farmed Atlantic salmon Salmo ... -
Fôr, fôring og kvalitet
Olsen, Rolf Erik; Bjørnevik, Marit (Havforskningsnytt, Working paper, 2003) -
Habituation and conditioning in gilthead sea bream (Sparus aurata): Effects of aversive stimuli, reward and social hierarchies
Folkedal, Ole; Fernö, Anders; Nederlof, Marit A. J.; Fosseidengen, Jan Erik; Cerqueira, Marco; Olsen, Rolf Erik; Jonatan, Nilsson (Peer reviewed; Journal article, 2017) -
Havbruksrapport 2001
Olsen, Rolf Erik; Hansen, Tom (Fisken og havet, særnummer;3-2001, Research report, 2001-02) -
Havbruksrapport 2002
Glette, Johan; van der Meeren, Terje; Olsen, Rolf Erik; Skilbrei, Ove (Fisken og havet, særnummer;3-2002, Research report, 2002-02) -
Impact of Antioxidant Feed and Growth Manipulation on the Redox Regulation of Atlantic Salmon Smolts
Yin, Peng; Bjørnsson, Bjørn Thrandur; Fjelldal, Per Gunnar; Saito, Takaya; Remø, Sofie C.; Edvardsen, Rolf Brudvik; Hansen, Tom Johnny; Sharma, Sandeep; Olsen, Rolf Erik; Hamre, Kristin (Peer reviewed; Journal article, 2022)Accumulating evidence indicates a close relationship between oxidative stress and growth rate in fish. However, the underlying mechanisms of this relationship remain unclear. This study evaluated the combined effect of ... -
Impact of dietary carbohydrate/protein ratio on hepatic metabolism in land-locked Atlantic salmon (Salmo salar L.)
Betancor, Mónica B.; Olsen, Rolf Erik; Marandel, Lucie; Skulstad, Ole Fredrik; Madaro, Angelico; Tocher, Douglas R.; Panserat, Stephane (Journal article; Peer reviewed, 2018)A common-garden experiment was carried out to compare two genetically distinct strains of Atlantic salmon (Salmo salar) fed diets with either high (CHO) or low (NoCHO) digestible carbohydrate (starch). Twenty salmon from ... -
Improved method for triacylglycerol-derived fatty acid profiling by various non-lethal and lethal sampling techniques in Atlantic salmon
Olsen, Rolf Erik; Taranger, Geir Lasse; Svåsand, Terje; Skilbrei, Ove (Journal article; Peer reviewed, 2013-11-14)The current paper compares the use of adipose fin and muscle biopsies as non-lethal sampling procedures, and the suitability of triacylglycerol (TAG) versus total lipid (TOT) fatty acid composition (fatty acid methyl esters, ... -
Intestinal health in Atlantic salmon post-smolt (Salmo salar) when fed low- and high HUFA diets
Løvmo, Signe Dille; Sundh, Henrik; Whatmore, Paul; Nordvi, Malene Fosse; Sigholt, Trygve; Madaro, Angelico; Bardal, Tora; Olsen, Rolf Erik (Peer reviewed; Journal article, 2022)It is well established that farmed Atlantic salmon (Salmo salar) need n3-highly unsaturated fatty acids (HUFA) in their diet to thrive and grow. However, the biological functions to the individual HUFAs may differ, implying ... -
Kvalitet på sei ved oppdrettsanlegg – ein eksperimentell studie
Otterå, Håkon; Karlsen, Ørjan; Slinde, Erik; Olsen, Rolf Erik (Fisken og havet, Research report, 2008)Wild caught saithe were fed on commercial diets made for salmon or cod from October 2006 to June 2007. Several flesh quality measurements were made. Growth turned out to be very low for a part of the population, while ... -
Lipid and fatty acid digestibility in Calanus copepod and krill oil by Atlantic halibut (Hippoglossus hippoglossus L.)
Colombo-Hixson, Stefanie M.; Olsen, Rolf Erik; Milley, Joyce E.; Lall, Santosh P. (Journal article; Peer reviewed, 2010-12-24)Marine zooplankton represent a significant biomass of marine lipid that could supply lipid in diets for farmed marine fish. Digestibility of lipid and fatty acids of the copepod, Calanus finmarchicus and Antarctic krill, ... -
Lipid and fatty acid digestibility in Calanus copepod and krill oil by Atlantic halibut (Hippoglossus hippoglossus L.)
Colombo-Hixson, Stefanie M.; Olsen, Rolf Erik; Milley, Joyce E.; Lall, Santosh P. (Journal article; Peer reviewed, 2010-12-24)Marine zooplankton represent a significant biomass of marine lipid that could supply lipid in diets for farmed marine fish. Digestibility of lipid and fatty acids of the copepod, Calanus finmarchicus and Antarctic krill, ... -
Low intestinal inflammation model (HP48) in Atlantic salmon (Salmo salar) and inflammatory mitigation by Bactocell
Nordvi, Malene Fosse; Løvmo, Signe Dille; Whatmore, Paul; Sundh, Henrik; Sigholt, Trygve; Olsen, Rolf Erik (Peer reviewed; Journal article, 2022)Moderate levels of intestinal damage and inflammation are often seen in intensive fish aquaculture. The causes may be due to antinutrients from plant meals, stress or other causes. There is currently a lack of good models ... -
Mid and hindgut transcriptome profiling analysis of Atlantic salmon (Salmon salar) under unpredictable chronic stress
Løvmo, Signe Dille; Madaro, Angelico; Whatmore, Paul; Bardal, Tora; Østensen, Mari-Ann; Sandve, Simen Rød; Olsen, Rolf Erik (Peer reviewed; Journal article, 2020)The intestinal epithelium is a selectively permeable barrier for nutrients, electrolytes and water, while maintaining effective protection against pathogens. Combinations of stressors throughout an animal's life, especially ... -
Molecular cloning, characterization and nutritional regulation of key enzymes required for the effective utilization of marine wax esters by Atlantic salmon (Salmo salar L.)
Minghetti, M.; Olsen, Rolf Erik; Tocher, D.R. (Journal article; Peer reviewed, 2010-10)Previous studies had shown that wax ester-rich lipid extracted from calanoid copepods could be a useful alternative to fish oil as a provider of long-chain n-3 polyunsaturated fatty acids in diets for use in salmon ... -
Molecular cloning, characterization and nutritional regulation of key enzymes required for the effective utilization of marine wax esters by Atlantic salmon (Salmo salar L.)
Minghetti, M.; Olsen, Rolf Erik; Tocher, D.R. (Journal article; Peer reviewed, 2010-10)Previous studies had shown that wax ester-rich lipid extracted from calanoid copepods could be a useful alternative to fish oil as a provider of long-chain n-3 polyunsaturated fatty acids in diets for use in salmon ... -
Molecular Mechanism Involved in Carotenoid Metabolism in Post-Smolt Atlantic Salmon: Astaxanthin Metabolism During Flesh Pigmentation and Its Antioxidant Properties
Schmeisser, Jerome; Verlac-Trichet, Viviane; Madaro, Angelico; Lall, Santosh P.; Torrissen, Ole; Olsen, Rolf Erik (Peer reviewed; Journal article, 2021)A better understanding of carotenoid dynamics (transport, absorption, metabolism, and deposition) is essential to develop a better strategy to improve astaxanthin (Ax) retention in muscle of Atlantic salmon. To achieve ... -
Not too slow, not too fast: water currents affect group structure, aggression and welfare in postsmolt Atlantic salmon Salmo salar
Solstorm, Frida; Solstorm, David; Oppedal, Frode; Olsen, Rolf Erik; Stien, Lars Helge; Fernø, Anders (Peer reviewed; Journal article, 2016)