Search Results - "Åsgård, Torbjørn"

Utilization of feed resources in the production of Atlantic salmon (Salmo salar) in Norway: An update for 2016 by Aas, Turid Synnøve, Ytrestøyl, Trine, Åsgård, Torbjørn

“…•1,252,573 tonnes of salmon was produced in Norway in 2016, using 1,627,478 tonnes of feed ingredients.•Marine ingredients constituted 25% of the feed…”
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Utilisation of feed resources in production of Atlantic salmon (Salmo salar) in Norway by Ytrestøyl, Trine, Aas, Turid Synnøve, Åsgård, Torbjørn

“…In 1990, 90% of the ingredients in Norwegian salmon feed were of marine origin, whereas in 2013 only around 30%. The contents of fish meal and fish oil in the…”
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Utilization of feed resources in the production of Atlantic salmon (Salmo salar) in Norway: An update for 2020 by Aas, Turid Synnøve, Åsgård, Torbjørn, Ytrestøyl, Trine

“…The utilization of feed resources in Norwegian salmon farming has previously been reported for 2010, 2012 and 2016. This paper presents an update for 2020,…”
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Tank size and fish management history matters in experimental design by Espmark, Åsa Maria, Kolarevic, Jelena, Åsgård, Torbjørn, Terjesen, Bendik Fyhn

“…To investigate the questions: (1) does tank size affect fish performance; (2) does tank size prior to an experiment affect later fish performance and (3) how…”
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Chemical composition of whole body and fillet of slaughter sized Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) farmed in Norway in 2020 by Aas, Turid Synnøve, Åsgård, Torbjørn, Ytrestøyl, Trine

“…The fish is the end-product in fish farming, but updated data on the composition of slaughter sized farmed salmon and trout are still scarce. The body…”
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Utilization of feed resources in the production of rainbow trout (Oncorhynchus mykiss) in Norway in 2020 by Aas, Turid Synnøve, Åsgård, Torbjørn, Ytrestøyl, Trine

“…The utilization of feed resources in Norwegian farming of Atlantic salmon has been reported for 2010, 2012, 2016 and 2020. The present paper is a corresponding…”
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Design, dimensioning, and performance of a research facility for studies on the requirements of fish in RAS environments by Terjesen, Bendik Fyhn, Summerfelt, Steven T., Nerland, Ståle, Ulgenes, Yngve, Fjæra, Svein Olav, Megård Reiten, Britt Kristin, Selset, Roger, Kolarevic, Jelena, Brunsvik, Per, Bæverfjord, Grete, Takle, Harald, Kittelsen, Arne H., Åsgård, Torbjørn

“…► The requirements of salmon in RAS for optimal performance and welfare are little known. ► Nofima Centre for Recirculation in Aquaculture was built to improve…”
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Measurement of gastrointestinal passage rate in Atlantic salmon (Salmo salar) fed dry or soaked feed by Aas, Turid Synnøve, Sixten, Hanne Jorun, Hillestad, Marie, Sveier, Harald, Ytrestøyl, Trine, Hatlen, Bjarne, Åsgård, Torbjørn

“…•Gastrointestinal passage rate in Atlantic salmon fed one meal of either dry or soaked feed was measured.•For measuring gastrointestinal passage rate, a…”
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Mineral nutrition and bone health in salmonids by Baeverfjord, Grete, Antony Jesu Prabhu, P., Fjelldal, Per Gunnar, Albrektsen, Sissel, Hatlen, Bjarne, Denstadli, Vegard, Ytteborg, Elisabeth, Takle, Harald, Lock, Erik‐Jan, Berntssen, Marc H.G., Lundebye, Anne‐Katrine, Åsgård, Torbjørn, Waagbø, Rune

“…In the recent years, challenges faced in salmonid farming with regard to deformities have helped to improve our knowledge on skeletal biology and development…”
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Feed intake, nutrient digestibility and nutrient retention in Atlantic salmon (Salmo salar L.) fed diets with different physical pellet quality by Aas, Turid Synnøve, Sixten, Hanne Jorun, Hillestad, Marie, Ytrestøyl, Trine, Sveier, Harald, Åsgård, Torbjørn

“…Three feeds with different physical pellet quality but the same formulation were fed to Atlantic salmon for 97 days. Pellet quality was measured as bulk…”
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Analysis of pellet degradation of extruded high energy fish feeds with different physical qualities in a pneumatic feeding system by Aas, Turid Synnøve, Oehme, Maike, Sørensen, Mette, He, Gaojie, Lygren, Ingolf, Åsgård, Torbjørn

“…▶ We analyse pellet breakage of three commercial salmon feeds during pneumatic conveying. ▶ Pellet breakage depends on feed type. ▶ Pellet breakage is highest…”
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Addition of yttrium oxide as digestibility marker by vacuum coating on finished pellets — A method for assessing digestibility in commercial salmon feeds? by Hatlen, Bjarne, Nordgreen, Andreas Hoel, Romarheim, Odd Helge, Aas, Turid Synnøve, Åsgård, Torbjørn

“…Two experiments were carried out with Atlantic salmon in sea cages to study the possibility of assessing digestibility of commercial feeds by means of an inert…”
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Low feed pellet water stability and fluctuating water salinity cause separation and accumulation of dietary oil in the stomach of rainbow trout ( Oncorhynchus mykiss) by Baeverfjord, Grete, Refstie, Ståle, Krogedal, Per, Åsgård, Torbjørn

“…Regurgitation (belching) of oil is a problem in sea farmed rainbow trout kept in water with fluctuating salinity. This often coincides with abdominal…”
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Feed intake in Atlantic salmon fed with or without surface spreading of feed by Asgard, Torbjorn, Ytrestoy, Trine, Alfredsen, Jo Arve, Aas, Turid Synnove, Skoien, Kristoffer Rist, Alver, Morten Omholt

“…In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in…”
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Feed pellet distribution in a sea cage using pneumatic feeding system with rotor spreader by Oehme, Maike, Aas, Turid Synnøve, Sørensen, Mette, Lygren, Ingolf, Åsgård, Torbjørn

“…► Pellet distribution from a pneumatic feeding system is described. ► Pellet size, air speed, spreader type and orientation of spreader were tested. ► Feed…”
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Conjugated linoleic acid in diets for juvenile Atlantic salmon ( Salmo salar); effects on fish performance, proximate composition, fatty acid and mineral content by Berge, Gerd Marit, Ruyter, Bente, Åsgård, Torbjørn

“…We have examined the effects of different levels of dietary conjugated linoleic acid (CLA) on the growth and body composition of 0.7 g Atlantic salmon fry…”
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Effects of a temperature shift on seawater challenge test performance in Atlantic salmon ( Salmosalar) smolt by Staurnes, Magne, Sigholt, Trygve, Åsgård, Torbjørn, Baeverfjord, Grete

“…Seawater tolerance of Atlantic salmon ( Salmo salar) smolts acclimated at 8°C in fresh water was tested in seawater challenge tests at 2°C, 5°C, 11°C, 14°C and…”
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Molecular and physiological responses to long-term sublethal ammonia exposure in Atlantic salmon (Salmo salar) by Kolarevic, Jelena, Takle, Harald, Felip, Olga, Ytteborg, Elisabeth, Selset, Roger, Good, Christopher M., Baeverfjord, Grete, Åsgård, Torbjørn, Terjesen, Bendik Fyhn

“…► Rhcg1 plays an important role in ammonia excretion in Atlantic salmon parr during long-term exposure to sublethal ammonia contrary to the results of acute…”
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Determination of digestibility of commercial salmon feeds by Hillestad, Marie, Åsgård, Torbjørn, Berge, Gerd Marit

“…The aim of the study was to develop an applicable method for determination of the digestibility of nutrients in commercial feeds. Leaching of markers and dry…”
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Availability of phosphorus in fish bone meal and inorganic salts to Atlantic salmon ( Salmo solar) as determined by retention by Nordrum, Sigve, Åsgård, Torbjørn, Shearer, Karl D., Arnessen, Petter

“…The availability of phosphorus to juvenile (5.6 g) Atlantic salmon from primary and secondary calcium phosphate, primary sodium phosphate and fish bone meal…”
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