Browsing Doctoral theses (VetMed) by Title
Now showing items 79-98 of 137
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Medaka (Oryzias latipes) gonadotropins : production and developmental profiles, pharmacological characterization of their receptors, and establishment of a novel transgenic line tg(fshb:DsRed2)
(PhD Thesis;2019:6, Doctoral thesis, 2019)The gonadotropins, follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh), produced in gonadotrope cells of the pituitary, possess key roles in the endocrine control of vertebrate puberty and reproduction as part ... -
Melanised focal changes in Atlantic salmon : interactions between infection and immunity
(PhD Thesis;2021:82, Doctoral thesis, 2022)Atlantic salmon (Salmo salar) farming has increased rapidly in Norway over the last 50 years. However, the large-scale farming of salmon battles serious health problems. There are currently many adverse conditions threatening ... -
Microbe-associated molecular patterns of Aliivibrio salmonicida : roles in the pathogenesis of cold-water vibriosis
(PhD Thesis;2017:62, Doctoral thesis, 2017)Aliivibrio salmonicida is the cause of cold-water vibriosis, a hemorrhagic septicemia of farmed salmonids. Previous reports have shown that Al. salmonicida is able to circumvent defense systems of the fish host, and it ... -
Microbial interactions : effects on virulence in Enterohaemorrhagic Escherichia coli (EHEC)
(PhD Thesis;2015:51, Doctoral thesis, 2017-07-13)Enterohaemorrhagic Escherichia coli (EHEC) is an emerging food borne pathogen associated with a number of outbreaks worldwide, and is a serious public health threat. The symptoms of the disease can range from mild diarrhoea ... -
Molecular characterization of Piscine orthoreovirus (PRV) and its pathogenesis in salmonids
(PhD Thesis;2019:79, Doctoral thesis, 2019)Piscine orthoreovirus (PRV) is a virus of salmonid fish. PRV has been associated with different diseases in various salmonid fish species, including heart and skeletal muscle inflammation (HSMI) in Atlantic salmon and more ... -
Molecular studies of Piscine orthoreovirus : viral factories, kinetics and vaccination
(PhD Thesis;2017:79, Doctoral thesis, 2018)Piscine orthoreovirus (PRV) is ubiquitous in farmed Atlantic salmon (Salmo salar) and the cause of heart and skeletal muscle inflammation (HSMI). PRV is an orthoreovirus in the family Reoviridae and shows several similarities ... -
Molecular studies of Yersinia ruckeri in Norwegian aquaculture
(PhD thesis;2022:66, Doctoral thesis, 2022)Yersinia ruckeri is the causative agent of yersinosis in fish, a haemorrhagic septicaemia occurring predominantly in farmed species of salmonids. In Norway, yersiniosis has been regarded as a regionally limited disease of ... -
Monitoring fish health : a vital part of salmon farming management
(PhD Thesis;2023:4, Doctoral thesis, 2023)Mortality represents a major challenge in the salmon farming industry. In Norway the mortality in the marine phase of the salmon production cycle has been 15-20% annually the recent years. This situation is not sustainable ... -
Monitoring of drug resistance and resistance development mechanisms in salmon lice (Lepeophtheirus salmonis)
(PhD Thesis;2015:44, Doctoral thesis, 2017-07-13)The parasite salmon louse (Lepeophtheirus salmonis) poses a threat to the salmonid aquaculture in the Northern Hemisphere. Depending on the developmental stage and the abundance of lice, these parasites can cause stress, ... -
Nanoparticle based vaccine delivery of recombinant outer membrane proteins and characterization of Aeromonas hydrophila and Edwardsiella species in Asian Aquaculture
(PhD Thesis;2019:50, Doctoral thesis, 2019)Akvakultur startet i Asia og i dag produseres mer enn to tredjedeler av den globale produksjonen i denne regionen. Bærekraftig utvikling av intensiv akvakultur utfordres av sykdom som hovedsakelig skyldes bakterielle ... -
NDRG1 and PrPC in peripheral nerve myelin maintenance : insights from morphological studies in two unique animal models
(PhD Thesis;2020:28, Doctoral thesis, 2020)Peripheral nerves transmit signals between peripheral tissue and the central nervous system, essential for normal motor and sensory function. To enable this, the integrity of both the axon and Schwann cell is crucial. The ... -
Neonatal colisepticemia in broiler chickens : -Avian pathogenic Escherichia coli and risk factors for high first week mortality
(PhD Thesis;2023:48, Doctoral thesis, 2023)Broiler chicken meat is regarded lean and more sustainable than meat from other terrestrial production animals. Because of this, the industry is continuing to grow globally. To maintain animal welfare, production sustainability ... -
Neurodevelopmental toxicity of a human relevant mixture of persistent organic pollutants (POPs) and perfluorooctane sulfonic acid (PFOS)
(PhD Thesis;2021:63, Doctoral thesis, 2021)Persistent organic pollutants (POPs) are ubiquitous in the environment. Humans are continuously exposed to chemical mixtures through food and the environment. Exposure to POPs have been associated with several adverse ... -
Neuroendocrine regulation of pituitary gonadotropins during puberty in Atlantic salmon parr with focus on melatonin and Gnrh systems
(PhD Thesis;2018:105, Doctoral thesis, 2018)The pituitary gland, gonadotropins, together with neurohormones like gonadotropin-releasing hormone (Gnrh) and melatonin are key players in the control of vertebrate reproduction. In teleosts, despite the numerous studies ... -
New genomics and transcriptomics tools toward improving conservation strategies for sturgeons
(PhD Thesis;2020:12, Doctoral thesis, 2020)Sturgeons (Family Acipenseridae) are one of the largest and most primitive fish families on Earth. Although they have always been typically distributed throughout the Northern Hemisphere, during the last decades wild ... -
Noise reactivity and fear of fireworks in dogs : a study of genetic and phenotypic variables
(PhD Thesis;2023:1, Doctoral thesis, 2023)Noise reactivity is one of the most common behavioral problems in dogs. Even though various studies find significant differences in prevalence between breeds, and some also find gender differences, noise reactivity seems ... -
Non-neuronal functions of the prion protein : insights from a unique animal model
(PhD Thesis;2017:68, Doctoral thesis, 2017)The physiological function of the cellular prion protein (PrPC) remains enigmatic. A misfolded, infectious conformer of the protein, known as the scrapie isoform PrPSc, is able to aggregate in brain tissue and cause a group ... -
Non-typhoidal Salmonella in layer hen farms in Uganda : occurrence, biodiversity and antimicrobial resistance
(PhD Thesis;2018:83, Doctoral thesis, 2018)Non-typhoidal Salmonella (NTS) is an important global foodborne pathogen mainly acquired in humans from animal sources through consumption of contaminated animal products, contacts with animals or their environment, ... -
Nutrition and intestinal health in Atlantic salmon (Salmo salar) : involvement of antinutrients and microbiota
(PhD Thesis;2016:88, Doctoral thesis, 2016)The use of alternative protein ingredients to replace fishmeal in diets for Atlantic salmon (Salmo salar) can have negative consequences for the fish intestinal health. The most severe intestinal physiological and morphological ... -
Pathogenesis studies of cardiomyopathy syndrome (CMS) in Atlantic salmon, Salmo salar L.
(PhD Thesis;2021:78, Doctoral thesis, 2021)Cardiomyopathy syndrome (CMS) in farmed Atlantic salmon, Salmo salar L., is an infectious viral disease causing severe inflammation in the cardiac spongiosum of atrium and ventricle of the salmonid heart. The disease was ...