Blar i Bergen Open Research Archive på forfatter "Lock, Erik-Jan"
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Black soldier fly larvae meal can replace fish meal in diets of sea-water phase Atlantic salmon (Salmo salar)
Belghit, Ikram; Liland, Nina Sylvia; Gjesdal, Petter; Biancarosa, Irene; Menchetti, Elisa; Li, Yanxian; Waagbø, Rune; Krogdahl, Åshild; Lock, Erik-Jan (Peer reviewed; Journal article, 2018-12-12)A feeding trial was conducted to test the growth potential, nutritional utilization, liver health and fillet sensory parameters of sea-water Atlantic salmon (Salmo salar L.) fed diets with increasing substitution of fish ... -
Changes in water temperature and oxygen: the effect of triploidy on performance and metabolism in large farmed Atlantic salmon
Sambraus, Florian; Remen, Mette; Olsen, Rolf Erik; Hansen, Tom Johnny; Waagbø, Rune; Torgersen, Thomas; Lock, Erik-Jan; Imsland, Albert; Fraser, Thomas W.K.; Fjelldal, Per Gunnar (Peer reviewed; Journal article, 2018)In salmon farming, the use of sterile triploids (3N) can mitigate the problem of escapees interbreeding with wild salmon. However, triploid salmon appear less tolerant to high water temperatures and low oxygen levels ... -
Chemical characterization of 21 species of marine macroalgae common in Norwegian waters: benefits of and limitations to their potential use in food and feed
Biancarosa, Irene; Belghit, Ikram; Bruckner, Christian Guido; Liland, Nina Sylvia; Waagbø, Rune; Amlund, Heidi; Heesch, Svenja; Lock, Erik-Jan (Peer reviewed; Journal article, 2018-01-18)BACKGROUND: In the past few years, much effort has been invested into developing a new blue economy based on harvesting, cultivating and processing marine macroalgae in Norway. Macroalgae have high potential for a wide ... -
The chemical composition of two seaweed flies (Coelopa frigida and Coelopa pilipes) reared in the laboratory
Biancarosa, Irene; Liland, Nina Sylvia; Day, Nicola; Belghit, Ikram; Amlund, Heidi; Lock, Erik-Jan; Gilburn, Andre S. (Peer reviewed; Journal article, 2018-05-29)Two species of seaweed flies, Coelopa frigida and Coelopa pilipes, were reared in the laboratory and their larvae were sampled for composition of amino acids, fatty acids and elements. The larvae were grown on two different ... -
Chronic Consumption of Farmed Salmon Containing Persistent Organic Pollutants Causes Insulin Resistance and Obesity in Mice
Ibrahim, Mohammad Madani; Fjære, Even; Lock, Erik-Jan; Naville, Danielle; Amlund, Heidi; Meugnier, Emmanuelle; Battistoni, Brigitte Le Magueresse; Frøyland, Livar; Madsen, Lise; Jessen, Niels; Lund, Sten; Vidal, Hubert; Ruzzin, Jérôme (Peer reviewed; Journal article, 2011-09-23)Background: Dietary interventions are critical in the prevention of metabolic diseases. Yet, the effects of fatty fish consumption on type 2 diabetes remain unclear. The aim of this study was to investigate whether a diet ... -
Dietary linoleic acid elevates the endocannabinoids 2-AG and anandamide and promotes weight gain in mice fed a low fat diet
Alvheim, Anita Røyneberg; Torstensen, Bente Elisabeth; Lin, Yu Hong; Lillefosse, Haldis Haukås; Lock, Erik-Jan; Madsen, Lise; Frøyland, Livar; Hibbeln, Joseph R.; Malde, Marian Kjellevold (Peer reviewed; Journal article, 2014-01)Dietary intake of linoleic acid (LNA, 18:2n-6) has increased dramatically during the 20th century and is associated with greater prevalence of obesity. The endocannabinoid system is involved in regulation of energy balance ... -
Dietary selenium required to achieve body homeostasis and attenuate pro-inflammatory responses in Atlantic salmon post-smolt exceeds the present EU legal limit
Prabhu, P. Antony Jesu; Holen, Elisabeth; Espe, Marit; Silva, Marta Sofia; Holme, May-Helen; Hamre, Kristin; Lock, Erik-Jan; Waagbø, Rune (Journal article; Peer reviewed, 2020)Selenium (Se) supplementation either as inorganic or organic form was evaluated in Atlantic salmon post-smolt in vivo and in vitro. The basal diet was formulated to be low in fish meal and contain 0.24 mg Se kg−1; six other ... -
Effect of levels and sources of dietary manganese on growth and mineral composition of post-smolt Atlantic salmon fed low fish meal, plant-based ingredient diets
Phillip, Antony Jesu Prabhu; Silva, Marta Sofia; Kröeckel, Saskia; Holme, May-Helen; Ørnsrud, Robin; Amlund, Heidi; Lock, Erik-Jan; Waagbø, Rune (Peer reviewed; Journal article, 2019-10-15)The impact of dietary manganese (Mn) levels and sources on the growth and mineral composition of post-smolt Atlantic salmon (Salmo salar) fed practical diets was studied. Seven experimental diets were prepared with graded ... -
Modulation of nutrient composition of black soldier fly (Hermetia illucens) larvae by feeding seaweed-enriched media
Liland, Nina Sylvia; Biancarosa, Irene; Araujo, Pedro; Biemans, Daan; Bruckner, Christian Guido; Waagbø, Rune; Torstensen, Bente Elisabeth; Lock, Erik-Jan (Journal article, 2017-08-24)Black soldier fly (Hermetia illucens) larvae are a promising source of protein and lipid for animal feeds. The nutritional composition of the BSF larvae depend partly on the composition of the feeding medium. The BSF lipid ... -
Potential of insect-based diets for Atlantic salmon (Salmo salar)
Belghit, Ikram; Liland, Nina Sylvia; Waagbø, Rune; Biancarosa, Irene; Pelusio, Nicole; Li, Yanxian; Krogdahl, Åshild; Lock, Erik-Jan (Peer reviewed; Journal article, 2018-04)In the present study, we aimed to assess the effect of dietary insect meal (IM) and insect oil (IO) on growth performance, body composition and nutrient digestibility of freshwater reared Atlantic salmon. The IM and IO ... -
Replacing fish meal with insect meal in the diet of Atlantic salmon (Salmo salar) does not impact the amount of contaminants in the feed and it lowers accumulation of arsenic in the fillet
Biancarosa, Irene; Sele, Veronika; Belghit, Ikram; Ørnsrud, Robin; Lock, Erik-Jan; Amlund, Heidi (Peer reviewed; Journal article, 2019)Insects are promising sources of protein and lipid in feeds for farmed animals. In the European Union, the use of insect meal (IM) and insect oil is permitted in fish feed. However, the European Food Safety Authority has ... -
Zinc uptake in fish intestinal epithelial model RTgutGC: Impact of media ion composition and methionine chelation
Prabhu, Antony; Stewart, Theodora; Silva, Marta Sofia; Amlund, Heidi; Ørnsrud, Robin; Lock, Erik-Jan; Waagbø, Rune; Hogstrand, Christer (Peer reviewed; Journal article, 2018-12)Apical uptake of zinc as ionic Zn(II) or as Zn-methionine (Zn-Met) was studied in RTgutGC cell line in vitro under media compositions mirroring the gut luminal ionic concentration of freshwater (FW) and seawater (SW) ...