Blar i Nofima rapportserie på forfatter "Åsgård, Torbjørn Einar"
-
Collection of feed spill and faeces from tank outlet. The FOGAS project
Aas, Turid Synnøve; Nerland, Frode; Åsgård, Torbjørn Einar; Meriac, Andre (Nofima rapportserie, Research report, 2023) -
Effects of dietary moisture content of extruded diets on physical feed quality and nutritional response in Atlantic salmon (Salmo salar) - A CREATE project
Oehme, Maike Marlene; Aas, Turid Synnøve; Olsen, Hanne Jorun; Sørensen, Mette; Hillestad, Marie; Li, Yafei; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2012)Feed pellets in modern aquaculture must be of high physical quality to withstand impacts during transport, storage and feeding. However, physical quality of feed has been shown to affect feed intake, nutrient digestibility ... -
Estimated content of nutrients and energy in feed spill and faeces in Norwegian salmon culture
Aas, Turid Synnøve; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2017)The annual production of 1.3 million tons of salmon in Norway consumes 1.5 million tons of feed. Some of the energy and nutrients from feed is not digested by the salmon, and ends up in the faeces. In addition, nutrients ... -
Estimert innhold av næringsstoff og energi i fôrspill og faeces fra norsk lakseoppdrett
Aas, Turid Synnøve; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2017)Det produseres 1,3 millioner tonn laks og omsettes 1,5 millioner tonn fôr årlig i Norge. Noe av energien og næringsstoffene fra fôret er ikke tilgjengelig for laksen, og ender opp i faeces. I tillegg ender energi og ... -
Feed intake and nutrient digestibility and retention in Atlantic salmon fed diets with different physical pellet quality. A CREATE project
Aas, Turid Synnøve; Sixten, Hanne Jorun; Hillestad, Marie; Ytrestøyl, Trine; Sveier, Harald; Åsgård, Torbjørn Einar (Research report, 2015)Three extruded salmon diets (9 mm) were produced with the same formulation but different physical pellet qualities. Pellet quality was measured in terms of bulk density, durability (Ligno and DORIS test), fat leakage, ... -
Feed intake in Atlantic salmon fed with two different spreading patterns of feed
Aas, Turid Synnøve; Ytrestøyl, Trine; Åsgård, Torbjørn Einar; Skøien, Kristoffer Rist; Alver, Morten Omholt; Alfredsen, Jo Arve (Research report, 2015) -
Feed pellet durability in pneumatic conveying systems for fish farming
Sørensen, Mette; He, Gaojie; Oehme, Maike Marlene; Åsgård, Torbjørn Einar; Storebakken, Trond; Aas, Turid Synnøve (Nofima rapportserie, Research report, 2008)This report is based on Gaojie He’s master thesis, which was completed in june 2008 at the Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, supervised by Mette Sørensen and Trond ... -
Gastrointestinal passage rate in Atlantic salmon (Salmo salar) fed dry or soaked feed. A CREATE project
Aas, Turid Synnøve; Ytrestøyl, Trine; Hatlen, Bjarne; Sixten, Hanne Jorun; Hillestad, Marie; Åsgård, Torbjørn Einar (Research report, 2013)Atlantic salmon was fed a commercial-like diet either as is (92% dry matter) or soaked for 2 h in sea water prior to feeding (70% dry matter). The salmon showed large individual variation in gastrointestinal passage rate ... -
Gut evacuation rate in Atlantic salmon (Salmo salar) fed diets with different physical properties. A CREATE project
Aas, Turid Synnøve; Ytrestøyl, Trine; Hatlen, Bjarne; Sixten, Hanne Jorun; Hillestad, Marie; Sveier, Harald; Selset, Roger; Åsgård, Torbjørn Einar (Research report, 2014)To measure the effect of physical feed quality on gut evacuation, Atlantic salmon with mean weight 1047 g (measured after finishing the sampling) was fed two extruded feeds with different physical quality to satiation. ... -
Nutritional value of feeds with different physical qualities
Aas, Turid Synnøve; Terjesen, Bendik Fyhn; Sørensen, Mette; Oehme, Maike Marlene; Sigholt, Trygve; Hillestad, Marie; Holm, Jørgen; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2009)In a previously performed study, rainbow trout with mean initial weight 1144 g was fed two experimental feeds with similar chemical composition, but differing in physical properties (high and low water stability, denoted ... -
Resource utilisation and eco-efficiency of Norwegian salmon farming in 2010
Ytrestøyl, Trine; Aas, Turid Synnøve; Berge, Gerd Marit; Hatlen, Bjarne; Sørensen, Mette; Ruyter, Bente; Thomassen, Magny S.; Hognes, Erik Skontorp; Ziegler, Friederike; Sund, Veronica; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2011)This report consists of four parts: Part 1 is an evaluation of some of the methods used for evaluating food productions in a sustainability perspective. Part 2 is a description of some sustainability indicators often used ... -
Resource utilisation of Norwegian salmon farming in 2012
Ytrestøyl, Trine; Aas, Turid Synnøve; Åsgård, Torbjørn Einar (Research report, 2014)This report follows up the work on resource utilisation and eco-efficiency of Norwegian salmon production in 2010 and contains a resource budget for the Norwegian salmon production in 2012 showing the flow of major nutrients ... -
Resource utilization of Norwegian salmon farming in 2016 – Professional final report
Aas, Turid Synnøve; Ytrestøyl, Trine; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2019)This report is an update on the utilization of feed resources in Norwegian salmon farming industry in 2016. In 2016, 1.25 million tonnes of salmon were produced in Norway, using 1.62 million tonnes feed ingredients ‘as is’ ... -
Ressursregnskap og analyse av fôrråvarer 2012. Sluttrapport
Ytrestøyl, Trine; Aas, Turid Synnøve; Hognes, Erik Skontorp; Åsgård, Torbjørn Einar (Research report, 2014)Dette prosjektet er en oppfølging av et prosjekt gjennomført i 2011. Det er i prosjektet gitt en oversikt over hvilke fôrråvarer som er brukt i norsk lakseproduksjon i 2012 og hvor effektivt råvarene utnyttes i produksjonen ... -
Selection for improved feed efficiency in Atlantic salmon
Gjerde, Bjarne; Hatlen, Bjarne; Boison, Solomon Antwi; Åsgård, Torbjørn Einar; Kristjánsson, Ólafur Hjörtur; Seim, Rudi Ripman (Nofima rapportserie, Research report, 2020) -
Spreading of feed pellets in a sea cage for salmon farming using an automatic rotor spreader feeding system.A CREATE project
Aas, Turid Synnøve; Oehme, Maike Marlene; Sørensen, Mette; Lygren, Ingolf; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2011)Efficient production of fish in large cage units demands a feeding practice which is according to the fish’s behavioral and physiological requirements. It is generally presumed that spreading the feed pellets uniformly ... -
Stoff-flyt av næringsstoff og energi fra fôr i et landbasert settefiskanlegg
Aas, Turid Synnøve; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2019)Stoff-flyten av næringsstoff og energi fra fôr ble målt over en periode på 88 dager et settefiskanlegg med resirkuleringsteknologi. Forsøket gikk over en periode fra innsett av fisk til en større leveranse, og inkluderer ... -
Today’s and tomorrow's feed ingredients in Norwegian aquaculture
Sørensen, Mette; Berge, Gerd Marit; Thomassen, Magny S.; Ruyter, Bente; Hatlen, Bjarne; Ytrestøyl, Trine; Aas, Turid Synnøve; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2011)During the last decade, the production of Atlantic salmon has increased from around 900,000 tons worldwide in 2000 to more than 1,500,000 tons today, an increase of almost 70%. Norway is the main producer of Atlantic salmon. ... -
Utnyttelse av fôrressurser i norsk oppdrett av laks og regnbueørret i 2020. Faglig sluttrapport
Aas, Turid Synnøve; Ytrestøyl, Trine; Åsgård, Torbjørn Einar (Nofima rapportserie, Research report, 2022)