Blar i Master’s theses (BioVit) på tittel
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Effect of short time temperature alteration on two key reproduction hormone levels of Nile tilapia (Oreochromis niloticus)
(Master thesis, 2020)This study investigates the effects of rapid and short temperature change on the levels of the hormones testosterone and estradiol-17β and the subsequent effect on egg maturation in Nile tilapia (Oreochromis niloticus). ... -
Effect of steam-conditioning and enzymatic treatment on rheological properties of the shrimp feed, formulated with torula yeast (Candida utilis) as a novel feed raw ingredient
(Master thesis, 2018)The use of yeast as an alternative source of protein has been in demand as a novel feed ingredient in shrimp feed nowadays. In order to optimize its use, more research and study is required. The objective of this study was ... -
Effect of temperature-photoperiod interaction on growth and winter bud development in Norway spruce (Picea Abies)
(Master thesis, 2020)Woody species growing in temperate and boreal regions, like Norway spruce (Picea abies) have to enter dormancy to survive winter and freezing temperatures, while simultaneously maximizing their growing period. Dormancy is ... -
Effect of using insects as a dogfood ingredient: A perspective on technology and nutrition on focus to Lumbriculus variegatus, Hermetia illucens and Tenebrio molitor- A literature review
(Master thesis, 2021)The use of insect as food and feed has been in existence for a very long time as it was used as an alternative protein source for food and feed production. The current food crises has caused researchers to find ways of ... -
Effects of Blue Light on Assimilation, Growth, Morphology, and Water Usage in Cucumber Seedlings
(Master thesis, 2023)Blått lys (BL) kan påvirke plantevekst og -utvikling på flere måter, og agurk (Cucumis sativus) er spesielt sensitiv for lyskvalitet. Formålet med denne studien var å undersøke hvordan ulike andeler BL påvirker assimilasjon, ... -
Effects of Candida utilis as a protein source and replacement of soybean meal and yeast with barley on feed utilization and nitrogen use efficiency in dairy cow diets
(Master thesis, 2020)An increasing global population requires increasing sustainable food production. Today, protein from soybeans is used in concentrates to dairy cows. Climatic conditions make it difficult to grow soybeans and other protein ... -
Effects of changes in the breeding goal on genetic improvement for maternal traits in Landrace pigs
(Master thesis, 2018)Maternal ability is becoming increasingly more important in today’s breeding practices, as it increases the animal welfare, as well as, decreases the economic cost related to the loss of animals. Because of the complexity ... -
Effects of CRISPR mediated kncok-out of bco2-l (beta-carotene 15'15 dioxygensae 2-like) on genes related to astaxanthin metabolism in Atlantic salmon
(Master thesis, 2024)This study was done to evaluate the effect of knockout of bco2-l gene on fillet pigmenation in salmon. -
Effects of day and night temperature and lighting conditions on growth, nutritional status and tipburn of lettuce (Lactuca Sativa L.`Frillice´) cultivated in controlled environment
(Master thesis, 2022)Growth chamber experiments were conducted with Lactuca sativa crisphead lettuce:`Frillice´ growing in nutrient film technique (NFT). The main objective was to study energy-efficient cultivation strategies without reductions ... -
Effects of different light intensities, light spectra and temperatures on the growth and fatty acid composition of the microalgae Acutodesmus obliquus
(Master thesis, 2019)The subject of this thesis were the effects of cultivation of different light intensities, spectral light areas and temperatures on growth and fatty acid composition in the microalgae Acutodesmus obliquus. While previous ... -
Effects of environmental enrichment on social cohesion, aggressive behavior and telencephalon cell proliferation in Atlantic salmon parr
(Master thesis, 2023)Much is known about the life cycle and growth of the Atlantic salmon, but there has been less focus on the behaviour and neurobiology of these animals in captivity and how they interact with each other and their environment. ... -
Effects of extruded pellets on physical feed quality and digestion behavior in dairy cows
(Master thesis, 2018)This thesis consists of a literature study and a presentation of an experimental work. The literature review contains knowledge of raw ingredients, rumen digestion of starch and protein and feed processing techniques. The ... -
Effects of fat soluble vitamins on viral infection and antiviral responses in Atlantic salmon (Salmo salar L.) erythrocytes
(Master thesis, 2017)Viral diseases are vital challenges in the aquaculture industry. In Norway, heart- and skeletal muscle inflammation (HSMI) is one of the major viral diseases affecting Atlantic salmon. In mammals, low vitamin D has been ... -
Effects of functional ingredients from yeast in diets for Atlantic salmon (Salmo salar), from two genetic backgrounds, on growth performance and nutrient utilization
(Master thesis, 2021)The overall aim of this thesis was to determine effects of functional ingredients in diets for Atlantic salmon, extracted from non- saccharomyces yeast, on growth performance and feed utilization. A 13 week (7 weeks in ... -
Effects of gradual adaptation to separation for calves on growth, feed intake and rumination in cow-calf contact system
(Master thesis, 2022)As animal welfare concerns are increasing, so is the interest in cow-calf contact (CCC). In CCC, the cow and calf go together for an extended period in dairy production. Compared to normal practice were the calf are separated ... -
Effects of replacing fish oil with microalgae biomass (Schizochytrium spp) as a source of n-3 LC-PUFA to Atlantic salmon (Salmo salar) on growth performance, fillet quality and fatty acid composition
(Master thesis, 2017)Low levels of EFA in fish feed as a result of changes in diet composition brings a need of finding a novel ingredient that will supplement Essential Fatty Acids (EFA) in fish feed. Microalgae have ability of producing ... -
The effects of SNP-density and sample size on G-REML estimates of genetic and genic variance
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Effects of the downstream processing of yeast on the gastrointestinal health of Atlantic salmon during seawater transfer
(Master thesis, 2021)Aquaculture intensification and sustainability concerns have prompted research into new feed ingredients, notably microbial ingredients such as yeast. Cyberlindnera jadinii (CJ) and Wickerhamomyces anomalus (WA) are among ... -
Effects of the soybean antinutrients saponin, isoflavonoid, and phytosterol on morphology and immune responses in the distal intestine of Atlantic salmon
(Master thesis, 2020)Two experiments were included in this study. The first experiment was designed to investigate the effects of the soybean antinutrients saponins, isoflavonoids, phytosterols and the mix of them on the distal intestine ... -
Effects of UVB light on laying hens and eggshell quality
(Master thesis, 2018)The effects of UVB lights on laying hens and eggshell quality were investigated in this study. UVB light treatment was provided by Philips TL 20W/12 RS SLV/25 tube light. The lights were on 2x30 min per day and were turned ...