Blar i Master's theses (IHA) på emneord "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922"
Viser treff 1-20 av 41
-
Alternative oils in cod diet: Effect on fish performance
(Master thesis, 2011-12-30)A study was conducted to investigate the effect of different sources of feed oils in the diet for cod. During the experiment we tested four types of feed. The content of protein (53%) and starch (8.5%) were the same in all ... -
An economic analysis of the use of recirculating aquaculture systems in the production of Tilapia
(Master thesis, 2012-06-19)An economic analysis of tilapia production was conducted using a recirculating aquaculture system facility, situated at the Norwegian University of Life Science (UMB). The goals were; (1) to evaluate and estimate the ... -
Calpain activity and texture in Atlantic salmon muscle analysis
(Master thesis, 2014-02-19)Calpain system consists of L- calpain , m- calpain, the calcium- dependent neutral proteases, and their endogenous inhibitor , calpastatin. Calpain system is probably the major proteolytic enzyme in protein degradation, ... -
Cathepsin activity and texture in Atlantic salmon muscle
(Master thesis, 2015-07-27)Cathepsins, a family of lysosomal proteases, are believed to play a role in muscle tenderization. In the present study the activity of cathapsin B+L in Atlantic salmon muscle and a possible influence on the textural quality ... -
Compostion and morphology of Atlantic salmon (Salmo salar L.) as affected by dietary oil
(Master thesis, 2013-09-10)A feeding experiment was conducted to examine the effect of diets high or low in rapeseed and additionally the effect of protein supplementation of diets rich in rapeseed oil in feed for farmed Atlantic salmon (Salmo salar ... -
Development of research tool to evaluate the potential of using chlorella sorokiniana as bio-filter in recycled tilapia production
(Master thesis, 2016-04-05)The current study was attempted to develop the research tools in order to evaluate if Chlorella sorokiniana has a potential to perform as a bio-filter in recycle water tilapia production. The overall objective was to ... -
Dietary impact on texture, gaping and liquid loss in fillets of farmed Atlantic salmon (Salmo salar L.)
(Master thesis, 2013-08-26)A seven-month long feeding trial was conducted to investigate the dietary influence on texture, gaping and liquid loss in fillets of Atlantic salmon. During the first 3 months of the experiment the salmon where fed a ... -
Does feeding frequency affect utilization of added amino acids in Nile tilapia?
(Master thesis, 2014-12-11)Nile tilapia (Oreochromis niloticus) is one of the major farmed fish species, with main production in Asia, South and Central America that can tolerate a wide range of environmental stress and easily adapt with low quality ... -
Domestic feed sources to farmed Arctic charr (Salvelinus alpinus). An investigation of nutritional implications and impact on the ecological footprint
(Master thesis, 2010-10-28)This study presents an overview of recapturing nutrients from Baltic Sea through mussel farming and producing mussel meal, detoxification of polluted fish into purified high quality fish meal and oil and introducing ... -
Effect of dietary fat level and exercise on growth, feed utilization, nutrient digestibility and fat deposition in Atlantic salmon (Salmo salar L.)
(Master thesis, 2013-10-21)The aim of the present study was to investigate the effects of dietary fat level and exercise on growth, feed utilization, nutrient digestibility and fat deposition in farmed Atlantic salmon (Salmo salar L.). Atlantic ... -
Effect of nutritional level of omega-3 fatty acids on growth and health related parameters of Atlantic salmon rared in fresh water
(Master thesis, 2014-02-19)Fish are the main supplier, in the human food basket, of the health beneficial n-3 highly unsaturated fatty acids (HUFA). Fish oil (FO) has traditionally been used as the dominating lipid component in fish feed. However, ... -
Effects of dietary oxidation status and vitamin E level on performance, fillet quality and robustness to acute stress in Atlantic salmon (Salmo salar L.)
(Master thesis, 2012-05-18)The effects of oxidized dietary lipid and the role of vitamin E on the growth performance, biometric traits, blood parameters, muscle pH and fillet quality of Atlantic salmon (Salmo salar L.) were evaluated after a 79-day ... -
Enrichment of plant-protein based diets for Nile tilapia with krill protein hydrolysate with high concentration of phospholipids rich in n-3 fatty acids
(Master thesis, 2013-10-21)a 28-day experiment was conducted to investigate the effects of dietary krill (Euphausia superba) hydrolysate with high concentration of phospholipids rich in n-3 fatty acids (KHPL) on growth performance, body composition, ... -
Establishing methods for cultivation of liver- and muscle cells from Atlantic cod: Special emphasis on morphological and metabolic characterisation of cells from liver during in vitro differentiation
(Master thesis, 2011-12-30)Atlantic cod is regarded as one of the most promising future aquaculture species in Norway. However, the cod aquaculture industry is facing major problems with occurrence of “fatty livers” leading to high degree of tissue ... -
Evaluation of Vital wheat gluten as a source of protein in extruded diets for juvenile Giant croaker (Nibea japonica) : feed technological properties and biological responses
(Master thesis, 2016-02-15)The aim of present study was to evaluate Vital wheat gluten (VWG) as protein source in comparison with high-quality fish meal (LT-FM) and soy protein concentrate (SPC) in extruded diets for juvenile Giant croaker (Nibea ... -
Expression of genes involved in regulation of polyunsaturated fatty acid metabolism in liver of Atlantic salmon (Salmo salar) undergoing parr-smolt transformation
(Master thesis, 2016-09-07)Purposes The primary aim of this thesis was to study if differences in nutritional and environmental factors influence the regulation of n-3 LC-PUFA synthesis in liver of Atlantic salmon (big smolts) undergoing parr-smolt ... -
Fatty acid specificity of skin phospholipid subclasses and the response to dietary reduction of EPA and DHA in Atlantic salmon ( Salmo salar)
(Master thesis, 2016-08-16)Abstract The different phospholipid classes play a critical role in cell membrane structure and function. Skin is the first barrier for the animal body to prevent environmental damage and are in addition to the gills also ... -
Feasibility of using rare earth elements (REEs) to mark and identify escaped farmed Atlantic salmon (Salmo salar L.)
(Master thesis, 2014-02-11)The development of a marking technique which could be efficiently used to mass-mark different groups of salmonids, would be a great tool for fisheries and aquaculture management. The present study was conducted in order ... -
Feed quaility for improved survival and robustness of cleaner fish
(Master thesis, 2014-02-19)The aim of study was to improve the quality of moist feed for Ballan wrasse with use of different binders and inclusion level of the binders, as well as optimizing the immersion bath to improve gelling of alginate. Quality ... -
Fillet quality of Atlantic salmon (Salmo salar L.). Relevance of dietary amino acid supplementation and acclimation temperature before slaughter
(Master thesis, 2011-10-12)The aim of the present study was to investigate the impact of dietary composition and acclimation temperature before slaughter on fillet quality development of farmed Atlantic salmon (Salmo salar L.). The fish were fed a ...