Blar i Faculty of Biosciences (BioVit) på dokumenttype "Doctoral thesis"
Viser treff 21-40 av 156
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Designing the optimal free stall for dairy cows : effects of free-stall design on cleanliness, milk yield, health, and behaviour
(PhD Thesis;2011:42, Doctoral thesis, 2011)Liggebåsens utforming er av stor betydning for blant annet hygiene og kuenes atferd i et løsdriftfjøs ettersom kua tilbringer hoveddelen av tida si her, hovedsakelig liggende men også stående i båsen. For å unngå at kua ... -
Detection and validation of disease resistance QTL in wheat
(PhD Thesis;2018:02, Doctoral thesis, 2018)Powdery mildew (PM), Fusarium head blight (FHB) and Septoria leaf blotch (SNB) are devastating wheat diseases. Breeding of disease resistant varieties is an economical and environmentally friendly approach and is given ... -
Development and evaluation of 4-way crossbred chicken population in Southern Ethiopia
(PhD Thesis;2010:46, Doctoral thesis, 2010)Village chickens in Ethiopia are predominantly indigenous. They play an important role in the livelihood of farmers mainly by providing animal protein through meat and egg, as a source of income and family saving, and means ... -
Development and functions of adipose tissue in Atlantic salmon
(PhD Thesis;2009:42, Doctoral thesis, 2009)The trend in salmon aquaculture is to use feed with high lipid content. In current feeds, energy from lipids can comprise as much as 50% of the total energy, compared to 10% approximately 20 years ago. This change was ... -
Dynamic dietary salmon farming in the Faroe Islands with regards to production, quality and economic improvements
(PhD Thesis;2018:104, Doctoral thesis, 2018)The development of feeds for Atlantic salmon has been an ongoing process since the industry started in the 1970s. In the early years, salmon feeds had higher share of proteins than lipids, but after the introduction of ... -
Ecological effects of Cytisus scoparius invasion : a native or alien species?
(PhD Thesis;2019:31, Doctoral thesis, 2019)The number of alien invasive species is continually increasing, threatening the environment and economy and their management is challenging. For cases of cryptic invasions, it is not even known if a species is native or ... -
Effect of cobalt on fatty acid composition in milk of dairy cows and sows
(PhD Thesis;2011:75, Doctoral thesis, 2011)Previous research revealed that supplementing excess cobalt (Co) reduces bovine milk content of monounsaturated fatty acids (MUFAs), probably mediated by the enzyme Δ9 -desaturase. The general aim of this research project ... -
The effect of freezing and thawing on water flow and pesticide leaching in partially frozen soil: Soil column experiments and model development
(;2019:20, Doctoral thesis, 2019)Increased pesticide concentrations have often been detected in soil leachate, drain discharge and surface runoff during freeze/thaw periods in late winter and early spring, both in Norway and Sweden. Limited knowledge and ... -
Effects of culture conditions on the photoautotrophic growth and biochemical composition of Chlamydomonas reinhardtii, as a potential source for hydrogen production
(PhD Thesis;2014:85, Doctoral thesis, 2014)Hydrogen is a particularly attractive energy carrier, since its combustion produces water vapor only. The green microalga Chlamydomonas reinhardtii is able to produce hydrogen under sulfur-deficient anaerobic conditions ... -
Effects of storage time, temperature and modified atmosphere on sensory quality and health related compounds in fresh-cut swede and turnip
(PhD Thesis;2015:9, Doctoral thesis, 2017-07-06)Introducing new fresh-cut vegetable products onto the market may increase vegetable consumption. Usually the availability of Norwegian grown vegetables for fresh-cut production is limited by a short growing season. However, ... -
Epigenetic and genetic adaptation in experimental yeast populations
(PhD Thesis;2019:23, Doctoral thesis, 2019)Evolution is a highly complex process where life change over time by the influence of relatively simple forces. Bringing evolution into the lab is a valuable asset to answer questions about processes that shape evolution. ... -
Essentials for sustainable dairy goat breeding program in Tanzania
(PhD Thesis;2016:53, Doctoral thesis, 2022-11-15)The overall objective of this thesis was to develop building blocks essential for establishing a sustainable dairy goat breeding program in Tanzania. To fulfil this objective, three approaches were employed. This included ... -
Establishment of a base population for long-term genetic improvement of Nile tilapia in Ethiopia
(PhD Thesis;2019:8, Doctoral thesis, 2019)The success of genetic improvement obtained in fish breeding programs depends on the genetic diversity of the founder populations and how the base population is constructed, as they influence the genetic variation of the ... -
Evolution of adaptations to temperate climate in the grass subfamily Pooideae
(PhD Thesis;2016:89, Doctoral thesis, 2016)Temperate biomes are characterized by strong temperature and photoperiod seasonality and frequently occurring frost. Temperate plants have evolved to overcome challenges like cold stress, prolonged winters and short ... -
Evolution of flowering adaptations in temperate grasses
(PhD Thesis;2023:64, Doctoral thesis, 2023)Grasses (Poaceae) represent an unparalleled evolutionary success story and are particularly well adapted to the environmental challenges posed by temperate habitats. Crucial to their evolutionary success in temperate ... -
Farm animal-assisted interventions in clinical depression
(PhD Thesis;2011:25, Doctoral thesis, 2011)Depression affects millions of people every year. Depressed individuals suffer from depressed mood, loss of interest and enjoyment, reduced energy, diminished activity, reduced attention and concentration and reduced ... -
Focal dark spots in the skeletal muscle of Atlantic salmon : involvement of rib abnormalities, environmental factors, and local immune responses
(PhD Thesis;2023:67, Doctoral thesis, 2023)Focal dark spots (DS) represent a major fillet quality issue, leading to significant economic losses in farmed Atlantic salmon (Salmo salar L.). DS typically appear as discoloured red/black areas in the anterior hypaxial ... -
Forming links in the forage : a (meta)genome-centric metaproteomic approach to connect rumen microbial functions
(PhD Thesis;2023:59, Doctoral thesis, 2023)The rumen microbiome operates in close symbiosis with its ruminant host, where the rumen functions as a fermentation chamber for the conversion of complex recalcitrant carbohydrates into nutrients that represent the ... -
Fungicide resistance and resistance dynamics in Botrytis populations in Norway
(PhD Thesis;2022:6, Doctoral thesis, 2022)Grey mould, caused by Botrytis spp., causes serious losses in agriculturally and economically important crops worldwide. Growers in Norway have experienced grey mould control problems, and fungicide resistance in the ... -
Fusarium infection and its effects on germination and deoxynivalenol content of oats and screening for resistance by VIS-NIR spectroscopic methods
(PhD Thesis;2014:78, Doctoral thesis, 2014)Fusarium head blight (FHB) causes a great concern in Norway, and in the world at large, due to the mycotoxins produced by the causative pathogens. Different cultural practices, including deployment of resistant cultivars, ...