Browsing Brage NMBU by Author "Kortner, Trond M."
Now showing items 1-20 of 26
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A comprehensive transcriptional body map of Atlantic salmon unveils the vital role of the intestine in the immune system and highlights functional specialization within its compartments
Kortner, Trond M.; Afanasyev, Sergey; Koppang, Erling Olaf; Bjørgen, Håvard; Krogdahl, Åshild; Krasnov, Aleksei (Peer reviewed; Journal article, 2024)The intestine is a barrier organ that plays an important role in the immune system of Atlantic salmon. The immune functions are distributed among the diffuse gut lymphoid tissue containing diverse immune cells, and other ... -
A high-resolution map of the gut microbiota in Atlantic salmon (Salmo salar): A basis for comparative gut microbial research
Gajardo, Karina; Rodiles, Ana; Kortner, Trond M.; Krogdahl, Åshild; Bakke, Anne Marie; Merrifield, Daniel L; Sørum, Henning (Journal article; Peer reviewed, 2016) -
A meta-analysis to determine factors associated with the severity of enteritis in Atlantic salmon (Salmo salar) fed soybean meal-based diets
Agboola, Jeleel Opeyemi; Chikwati, Elvis Mashingaidze; Hansen, Jon Øvrum; Kortner, Trond M.; Mydland, Liv Torunn; Krogdahl, Åshild; Djordjevic, Brankica; Schrama, Johan W.; Øverland, Margareth (Peer reviewed; Journal article, 2022)A meta-analytic approach was used to determine factors associated with the severity of enteritis in distal intestine of Atlantic salmon fed soybean meal (SBM)-based diets. Dataset from 26 fish studies were extracted and ... -
A Screening Study on Effects Varying Dietary Macronutrient Composition on Gut Functions in Lumpfish (Cyclopterus lumpus)
Zhou, Weiwen; Hamre, Kristin; Chikwati, Elvis Mashingaidze; Kousoulaki, Katerina; Lein, Ingrid; Berge, Gerd Marit; Sæle, Øystein; Kortner, Trond M.; Krogdahl, Åshild (Peer reviewed; Journal article, 2022) -
Anatomy, immunology, digestive physiology and microbiota of the salmonid intestine: Knowns and unknowns under the impact of an expanding industrialized production
Bjørgen, Håvard; Li, Yanxian; Kortner, Trond M.; Krogdahl, Åshild; Koppang, Erling Olaf (Peer reviewed; Journal article, 2020)Increased industrialized production of salmonids challenges aspects concerning available feed resources and animal welfare. The immune system plays a key component in this respect. Novel feed ingredients may trigger ... -
Bile components and lecithin supplemented to plant based diets do not diminish diet related intestinal inflammation in Atlantic salmon
Penn, Michael; Kortner, Trond M.; Björkhem, Ingemar; Måsøval, Kjell; Krogdahl, Åshild (Journal article; Peer reviewed, 2016) -
Choline and phosphatidylcholine, but not methionine, cysteine, taurine and taurocholate, eliminate excessive gut mucosal lipid accumulation in Atlantic salmon (Salmo salar L)
Krogdahl, Åshild; Hansen, Anne Kristine Grostøl; Kortner, Trond M.; Björkhem, Ingemar; Krasnov, Aleksei; Berge, Gerd Marit; Denstadli, Vegard (Peer reviewed; Journal article, 2020)Excessive enterocyte lipid accumulation, with the suggested term lipid malabsorption syndrome (LMS), is frequently observed in Atlantic salmon (Salmo salar L), in small fish in fresh water as well as in large fish in ... -
Choline supplementation prevents diet induced gut mucosa lipid accumulation in post-smolt Atlantic salmon (Salmo salar L.)
Hansen, Anne Kristine; Kortner, Trond M.; Krasnov, Aleksei; Björkhem, Ingemar; Penn, Michael; Krogdahl, Åshild (Peer reviewed; Journal article, 2020)Background Various intestinal morphological alterations have been reported in cultured fish fed diets with high contents of plant ingredients. Since 2000, salmon farmers have reported symptoms indicating an intestinal ... -
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets
Li, Yanxian; Gajardo, Karina; Torres, Hugo Alexander Jaramillo; Kortner, Trond M.; Krogdahl, Åshild (Peer reviewed; Journal article, 2022)Background Being part of fish's natural diets, insects have become a practical alternative feed ingredient for aquaculture. While nutritional values of insects have been extensively studied in various fish species, their ... -
Dietary Fish Meal Level and a Package of Choline, β -Glucan, and Nucleotides Modulate Gut Function, Microbiota, and Health in Atlantic Salmon (Salmo salar, L.)
Krogdahl, Åshild; Chikwati, Elvis Mashingaidze; Krasnov, Aleksei; Dhanasiri, Anusha; Berge, Gerd Marit; Aru, Violetta; Khakimov, Bekzod; Engelsen, Søren Balling; Vinje, Hilde; Kortner, Trond M. (Peer reviewed; Journal article, 2023) -
Effects of dietary fish to rapeseed oil ratio on steatosis symptoms in Atlantic salmon (Salmo salar L) of different sizes
Siciliani, Daphne; Hubin, Aliaksandr; Ruyter, Bente Synnøve; Chikwati, Elvis Mashingaidze; Thunes, Vebjørn Gunnarson; Valen, Elin Christine; Hansen, Anne Kristine Grostøl; Hanssen, H.; Kortner, Trond M.; Krogdahl, Åshild (Peer reviewed; Journal article, 2024) -
Effects of dietary lipid level and environmental temperature on lipid metabolism in the intestine and liver, and choline requirement in Atlantic salmon (Salmo salar L) parr
Siciliani, Daphne; Kortner, Trond M.; Berge, Gerd Marit; Hansen, Anne Kristine Grostøl; Krogdahl, Åshild (Peer reviewed; Journal article, 2023)Choline was recently established as an essential nutrient for Atlantic salmon at all life stages. Choline deficiency is manifested as an excessive accumulation of dietary fat within the intestinal enterocytes, a condition ... -
Effects of dietary lipid level on growth, digestive physiology and disease resistance in lumpfish (Cyclopterus lumpus)
Berge, Gerd Marit; Zhou, Weiwen; Johansen, Lill-Heidi; Chikwati, Elvis Mashingaidze; Kortner, Trond M.; Lein, Ingrid; Krogdahl, Åshild (Peer reviewed; Journal article, 2023)Lumpfish (Cyclopterus lumpus) aquaculture has expanded greatly in recent years due to demands for sea lice cleanerfish from the salmon industry. There are knowledge gaps in lumpfish digestive physiology, nutrient requirement ... -
Effects of functional ingredients on gut inflammation in Atlantic salmon (Salmo salar L)
Krogdahl, Åshild; Dhanasiri, Anusha; Krasnov, Aleksei; Aru, Violetta; Chikwati, Elvis Mashingaidze; Berge, Gerd Marit; Engelsen, Søren Balling; Kortner, Trond M. (Peer reviewed; Journal article, 2023) -
Gut health and microbiota during the life cycle of Atlantic salmon (Salmo salar) produced under commercial Arctic conditions : modulation by functional feed ingredients investigated in vivo and in vitro
Wang, Jie (PhD Thesis;2021:17, Doctoral thesis, 2021)The goal of this thesis was to fill some of the knowledge gaps regarding gut health and microbiota of Atlantic salmon in the life period from late freshwater to seawater in the Arctic region for which two strategies were ... -
Intestinal Fluid Permeability in Atlantic Salmon (Salmo salar L.) Is Affected by Dietary Protein Source
Hu, Haibin; Chikwati, Elvis Mashingaidze; Kortner, Trond M.; Gajardo, Karina; Tinsley, John (Journal article; Peer reviewed, 2016) -
Intestinal functions and health of Ballan wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) : effects of variation in diet composition
Zhou, Weiwen (PhD thesis;2023:8, Doctoral thesis, 2023)To rear cleaner fish together with Atlantic salmon (Salmo salar) is a biological strategy to keep sea lice away from the salmon. Ballan (B) wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) are the two species ... -
Lesions of the biliary system in Atlantic salmon (Salmo salar L.)
Sveen, Lene; Chikwati, Elvis Mashingaidze; Dalum, Alf Seljenes; Kortner, Trond M.; Ravndal, Jarle; Einen, Olai; Mørkøre, Turid (Others, 2022)Gallbladders with mucosal outpouchings (diverticula) were found in a population of Atlantic salmon farmed in sea water. Soft tissue calcification affected the skin, skeletal muscle and gut, as identified by histological ... -
Lipid and choline supply affect Atlantic salmon enterocyte steatosis : in vivo and in vitro studies
Siciliani, Daphne (PhD thesis;2024:10, Doctoral thesis, 2024)The shift of farmed Atlantic salmon from a marine- to plant-based diet the last decades has revealed challenges concerning the dietary requirements necessary to ensure fish health. Of the nutrients lacking in plant feeds, ... -
Nutrition and intestinal health in Atlantic salmon (Salmo salar) : involvement of antinutrients and microbiota
Gajardo, Karina (PhD Thesis;2016:88, Doctoral thesis, 2016)The use of alternative protein ingredients to replace fishmeal in diets for Atlantic salmon (Salmo salar) can have negative consequences for the fish intestinal health. The most severe intestinal physiological and morphological ...