Blar i Faculty of Mathematics and Natural Sciences på emneord "Lakseoppdrett"
Viser treff 1-14 av 14
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Akvakultur og små vindturbinar: Eit moglegheitsstudie av i kva grad små vindturbinar kan dekkje energiforbruket ved norske oppdrettsanlegg
(Master thesis, 2018-06-21)The world’s population is growing rapidly, and it will become necessary, to a greater extent, to use the ocean for harvesting food. Norway is the largest exporter of salmon in the world. Prognosis says that aquaculture in ... -
Assessment of growth performance and liver lipid accumulation in Atlantic salmon (Salmo salar) fed an insect-based diet
(Master thesis, 2018-06-26)Increase in price and reduced availability of fish meal (FM) has caused the aquaculture industry to look at alternative sources for nutrients for feed production. Vegetable protein sources can replace a substantial part ... -
Development of a vaccine against salmon louse (Lepeophtheirus salmonis)
(Master thesis, 2018-06-26)Aquaculture is a growing industry whilst facing a major problem, the ectoparasite Lepeophtheirus salmonis. Parasite control in 2015 was estimated to cost 5 billion NOK. The challenges with the parasite are complex, and the ... -
Documentation of growth and insulin-like growth factor I in Atlantic salmon (Salmo salar) post-smolts reared in large scale semi-closed and open systems
(Master thesis, 2017-06-27)Understanding the variation of growth performance in different large scale production scenarios is of great importance to the aquaculture industry to develop efficient rearing procedures for cultured fish. This study ... -
The effect of aerobic training on growth, muscle development and heart condition in Atlantic salmon (Salmo salar) post-smolts in large-scale semi-closed containment systems.
(Master thesis, 2017-06-24)Exposing fish to moderate water currents as a form of exercise is often perceived as positive for fish welfare, growth, muscle development and heart condition. This thesis examines what effect rearing Atlantic salmon (Salmo ... -
Effect of tryptophan enriched diets on aggression in hierarchical groups of juvenile Atlantic salmon (Salmo salar)
(Master thesis, 2010-07-01)Aggression in fish hierarchies often leads to one dominant individual monopolizing resources (food/shelter), thus increasing their fitness. Meanwhile individuals in subordinate ranks, endure high stressful conditions, which ... -
Effects of rapid temperature changes on Atlantic salmon, Salmo salar, post-smolts
(Master thesis, 2017-06-28)Year round production of Atlantic salmon post-smolts in closed or semi-closed systems opens up for use of seawater from different depths, which will permit stocking of fish from closed containment system to the open sea ... -
Estimating genetic diversity in a domesticated population of Norwegian Atlantic salmon (Salmo salar) using genomic data
(Master thesis, 2017-12-15)New developments of high throughput sequencing technologies have allowed for breeders to assess values related to loss of genetic diversity in domesticated animals on a genomic level for better accuracy than the pedigree ... -
Feltoppfølging av rognkjeks vaksinert mot Aeromonas salmonicida A-lagstype V og VI
(Master thesis, 2017-06-16)Efficient sea-lice control is still one of the most important challenges for the salmon farming industry, and use of cleaner fish as biological delousing has increased considerably in recent years. Mortality of lumpsucker ... -
Mucosal responses in post-smolt Atlantic salmon (S. salar) following salmon lice (L. salmonis) infections
(Master thesis, 2018-05-04)The aquaculture sector is becoming increasingly important both for food production and economic reasons. The main problem today in Norwegian aquaculture is the copepod ectoparasite Leopeophtheirus salmonis which limits the ... -
Optimal response to lousy circumstances: The impact of salmon lice (Lepeophtheirus salmonis) on depth preference of sea trout (Salmo trutta)
(Master thesis, 2018-06-12)Sea trout are known for seeking out sources of freshwater to rid themselves of salmon lice. Still, the effect of natural haloclines in fjords on parasite dynamics is not well understood. We tagged 48 wild caught sea trout, ... -
Study of Ecdysone receptor and Ultraspiracle in the salmon louse (Lepeophtheirus salmonis)
(Master thesis, 2015-05-31)The salmon louse (Lepeophtheirus salmonis) is a parasite living on mucus, skin and blood of salmonids fishes. L. salmonis causes lesions and infections on fish fins and skins and such physical damages often lead to other ... -
Survival of Salmonid Alphavirus in seawater under different physical conditions
(Master thesis, 2014-08-06)Pancreas disease (PD) is an infectious disease caused by Salmonid alphavirus (SAV), which infects Atlantic salmon, Salmo salar L., and rainbow trout, Oncorhynchus mykiss (Walbaum). PD causes substantial economical losses ... -
Testing av vaksinasjonsregimer for rognkjeks, Cyclopterus lumpus, mot Aeromonas salmonicida
(Master thesis, 2017-06-16)The salmon louse (Lepeophthheirus salmonis) is currently the most serious problem in Norwegian salmon aquaculture. The increase in prevalence of salmon lice with reduced sensitivity to several different chemicals i.e. ...