Blar i Doctoral theses (VetMed) på tittel
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Housing of laboratory mice in a natural habitat : influence on immune system, gut microbiota, and colorectal cancer development
(PhD thesis;2022:26, Doctoral thesis, 2022)The natural habitat for the house mouse is on the ground, typically close to humans and their livestock and hence surrounded by a rich microbial diversity that throughout evolutionary history has driven the adaptation of ... -
Immune responses in Atlantic salmon (Salmo salar) following vaccination and Salmonid alphavirus challenge
(Doctoral thesis, 2021)Norway has perfect conditions for Atlantic salmon (Salmo salar) production and is one of the largest producers of salmon for food consumption worldwide, but rearing fish at high densities also means that infectious disease ... -
Immunological and physiological effects of Piscine orthoreovirus infection in Atlantic salmon (Salmo salar)
(PhD Thesis;2017:33, Doctoral thesis, 2017)Heart and skeletal muscle inflammation (HSMI) is an important viral disease in Norwegian farmed Atlantic salmon (Salmo salar), and was associated with Piscine orthoreovirus (PRV) in 2010. Recently, the causality between ... -
Immunological response profiles to salmon lice infections in Atlantic salmon : modulation by nutrition and selective breeding
(Doctoral thesis, 2016)Infections with the salmon louse Lepeophtheirus salmonis (L. salmonis) represent one of the most important limitations to sustainable Atlantic salmon (Salmo salar) farming today. The parasite exerts negative impacts on ... -
Impact of feed composition on rearing of broiler chickens without in-feed antimicrobials
(PhD Thesis;2021:41, Doctoral thesis, 2021)In-feed antimicrobials with antibiotic properties have been used for disease-preventive and performance-promoting purposes in rearing of broiler chickens since the mid-twentieth century. The use of antibiotic agents in ... -
In vitro embryo production in Norwegian Duroc and Landrace pigs
(PhD Thesis;2022:22, Doctoral thesis, 2022)The use of embryo technology is of interest in pig breeding to increase genetic gain in the breeding program and disseminate genetics of superior animals worldwide with less transportation of live animals and a lower ... -
In vitro investigations on infections with bovinecoronavirus and Cryptosporidium parvum
(Doctoral thesis, 2023)Intestinal infection causing diarrhoea is a major health problem among calves accounting for about 40% of calf diseases in Norway. Calves are especially susceptible to gastroenteritis during the first month of life of which ... -
Infections associated with reproductive disorders in cattle in Tanzania : occurrence, characterization and impact
(PhD Thesis;2017:98, Doctoral thesis, 2017)The livestock sector in Tanzania is huge in animal numbers but the production is disproportionally small. Most of the infections known to cause reproductive disorders are generally regarded endemic in Africa, but more ... -
Influence of base-excision-repair pathway enzymes on prion pathogenesis
(PhD Thesis;2017:47, Doctoral thesis, 2017)Experimental prion disease in mice is a well-established model system for studying the pathogenesis of prion-induced neurodegeneration. The mouse-adapted Rocky Mountain Laboratories (RML) strain is commonly used for this ... -
Influenza A(H1N1)pdm09 virus infection in swine : virus characterization and NK cell responses to infection
(PhD Thesis;2016:44, Doctoral thesis, 2017-07-14)Influenza viruses balance on the interface between animals and humans, and swine represents a possible intermediate host for human viruses. It is therefore of great importance for animal welfare and to the public health ... -
Insect larvae meal as a feed ingredient for Atlantic salmon (Salmo salar) : effects on intestinal function, health, and microbiota
(PhD thesis;2021:75, Doctoral thesis, 2021)Being part of fish’s natural diets, insects have become a realistic, sustainable feed ingredient for aquaculture. While insects’ nutritional values have been extensively studied in numerous fish species, their impact on ... -
Intestinal functions and health of Ballan wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) : effects of variation in diet composition
(PhD thesis;2023:8, Doctoral thesis, 2023)To rear cleaner fish together with Atlantic salmon (Salmo salar) is a biological strategy to keep sea lice away from the salmon. Ballan (B) wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) are the two species ... -
Intestinal microbiota, red meat, and colorectal tumours in dogs
(PhD Thesis;2018:42, Doctoral thesis, 2018)Tarmens mikrobiota består av et rikt nettverk av mikrober som har betydning for vertens fysiologi, og således helse og velvære. Mikrobiotaen påvirkes av diettens sammensetning av makronæringsstoffer (karbohydrater, proteiner, ... -
Intestinal protozoa in wildlife : parasite transmission at the wildlife-human-domestic animal interface
(PhD Thesis;2017:56, Doctoral thesis, 2017)The interfaces between humans, wild animals, and domestic animals are changing. This process is driven by a multitude of factors, including changes in land use, habitat loss and fragmentation, climate change, ecotourism, ... -
Intestinal protozoan parasites in Northern India : investigations on transmission routes
(PhD Thesis;2018.10, Doctoral thesis, 2017)Cryptosporidium and Giardia are protozoan parasites that have been confirmed as major causes of diarrhoea, particularly in children. They represent a significant, but often neglected, threat to public health, and particularly ... -
Introductory studies on bacterial agents infecting cleaner fish
(PhD Thesis;2015:98, Doctoral thesis, 2017-07-14)Cleaner fish (wrasse and lumpsucker) are used extensively in Norwegian salmon farms for biocontrol of sea louse infestation, but cleaner fish health and welfare has only recently become a focus of attention. Bacterial ... -
Investigation of the gut-associated lymphoid tissue in sheep with emphasis on natural killer cells
(PhD Thesis;2015:52, Doctoral thesis, 2017-07-04)The gut-associated lymphoid tissue (GALT) of sheep has been investigated for decades, and several immune cells receding within these structures have been described. The GALT of sheep has specialized compartments described ... -
Investigations on Cryptosporidium and Giardia in Tigray, Ethiopia from a One Health Perspective
(PhD Thesis;2022:54, Doctoral thesis, 2022)Enteric protozoans Cryptosporidium spp. and Giardia duodenalis are among the leading causes of diarrhoea in children. These parasites have particular impact in lowand middle-income countries. In these countries, people ... -
Levels of persistent organic compounds and heavy metals in farmed and wild fish from Zambia and Tanzania, and assessment of possible health effects
(PhD thesis;2023:9, Doctoral thesis, 2023)Pollution of water bodies due to human activities is a threat to sustainable fisheries. Pollutants like heavy metals and persistent organic pollutants (POPs) can affect biological functions in fish and human. This leads ... -
Lipid and choline supply affect Atlantic salmon enterocyte steatosis : in vivo and in vitro studies
(PhD thesis;2024:10, Doctoral thesis, 2024)The shift of farmed Atlantic salmon from a marine- to plant-based diet the last decades has revealed challenges concerning the dietary requirements necessary to ensure fish health. Of the nutrients lacking in plant feeds, ...