Browsing Doctoral theses (VetMed) by Title
Now showing items 93-112 of 129
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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 ... -
Pathogenicity and infectivity of Saprolegnia species in Atlantic salmon (Salmo salar L.) and their eggs
(PhD Thesis;2015:97, Doctoral thesis, 2017-07-04)In the past decades the global population has becoming increasingly dependent on aquaculture due to over-fishing of oceans and rivers. Consequently, fish farming has become the fastest growing food sector in the world. ... -
Persistent infection of Piscine orthoreovirus-1 (PRV-1) in Atlantic salmon (Salmo salar)
(PhD thesis;2021:49, Doctoral thesis, 2021)This thesis focuses on infection kinetics, infected cell types, viral shedding, and specific immune responses in persistently Piscine orthoreovirus-1 (PRV-1) infected Atlantic salmon. The aim is to enhance the understanding ... -
Persistent Organic Pollutants (POPs) and heavy metals in fish from Tanzania : levels and associated health risks to humans and fish
(PhD Thesis;2019:17, Doctoral thesis, 2019)Diet is considered as the main route of exposure to pollutants such as persistent organic pollutants (POPs) and heavy metals to humans during lifetime. POPs and heavy metals are both persistent and can bioaccumulate in the ... -
Persistent organic pollutants and effects on developmental and functional processes in mice
(PhD Thesis;2020:45, Doctoral thesis, 2020)Initial exposure to persistent organic pollutants (POPs) occurs by placental and lactational transfer during fetal and neonatal life and continues during the adult stage through ingestion, inhalation and dermal absorption. ... -
Piecing together the chain of infection for Streptococcus dysgalactiae in sheep and dairy cows - risk factors, sources, and genomic diversity of bacterial strains
(PhD Thesis;2022:63, Doctoral thesis, 2022)Streptococcus dysgalactiae subspecies dysgalactiae (SDSD) is an important cause of outbreaks of infectious arthritis in lambs and mastitis in dairy cows in Norway. The infections compromise animal welfare, increase ... -
Plant-based aquafeeds : carry-over potential of mycotoxins and phytoestrogens from feed to fish and implication for fish health and food safety
(PhD Thesis;2020:62, Doctoral thesis, 2020)The introduction of novel feed ingredients has brought tremendous changes in the field of aquaculture. The shift to non-marine resources was necessary because of rising prices for fish meal and fish oil and their decreasing ... -
Porcine gut microbiota, short-chain fatty acids, and gut health in response to a high yeast inclusion diet
(PhD Thesis;2021:31, Doctoral thesis, 2021)The results of the PhD project have shown that high inclusion of Cyberlindnera jadinii yeast in pig feed exerts a prebiotic‑like effect. Beneficial intestinal lactic acid‑producing bacteria increase in numbers following ... -
The presence of an acute phase response in experimental classical scrapie in lambs indicates a shift towards a pro-inflammatory status in the clinical terminal stages
(PhD Thesis;2021:13, Doctoral thesis, 2020)Classical scrapie in sheep is a transmissible and fatal neurodegenerative disease caused by the self-replicating and infectious prion protein, PrPSc, which is a conformational variant of the normal cellular prion protein, ... -
Prevalence of anticoagulant rodenticides in dogs and red foxes
(PhD Thesis;2020:61, Doctoral thesis, 2021)Anticoagulant rodenticides (AR) are used worldwide in urban and agricultural rodent pest control. Ingestion of ARs is a major cause of poisoning in dogs and secondary exposure (ingestion of poisoned prey) in wildlife is a ... -
Prevalence, levels, risk factors and knowledge, attitudes and practices associated with mycotoxins in fish feeds and their effect in fish in Kenya
(PhD Thesis;2022:70, Doctoral thesis, 2022)Mycotoxins are low molecular weight chemical by-products of fungal metabolism. They are frequently detected in human foods and animal feeds in the tropics due to environmental conditions such as, warm and humid climate and ... -
Production of Atlantic salmon (Salmo salar) in closed confinement systems (CCS) : salmon lice, growth rates, mortality and fish welfare
(PhD Thesis;2019:48, Doctoral thesis, 2019)Farming of Atlantic salmon have been in rapid growth since the 1970's and is now an important industry in many countries around the North Atlantic as well as Chile. Since 2000, all countries with farming of Atlantic salmon ... -
Pulmonary micrometastasis and immunological pre-metastatic niche in dogs with osteosarcoma
(PhD Thesis;2023:49, Doctoral thesis, 2023)Cancer is currently ranked as a leading cause of death in humans and dogs, most often due to metastatic disease. The pre-metastatic niche (PMN) represents the metastasis-supporting microenvironmental changes that occur ... -
Quinolone resistant Escherichia coli in Norwegian livestock : a comparative genomics study
(PhD Thesis;2020:16, Doctoral thesis, 2020)The occurrence of antimicrobial resistance in Norwegian livestock is generally low. This is a consequence of good animal health and welfare, which reduces the need for antimicrobial use. Quinolones are important antimicrobial ... -
Reproductive potential and quality of SpermVital semen used for artificial insemination in cattle
(PhD thesis;2020:17, Doctoral thesis, 2020)Utfallet av kunstig sædoverføring (KS) avhenger av flere faktorer, blant annet sædkvalitet, metoden for sædprosessering og miljøet i kjønnsorganet hos det inseminerte hunndyret. Vellykket KS hos storfe krever også riktig ... -
Reproductive problems in cattle in Bosnia and Herzegovina
(Doctoral thesis, 2019)The bovine industry represents the most important and the fastest growing branch of agriculture in Bosnia and Herzegovina (BH). Thus, this industry has experienced significant changes over the past twenty years regarding ... -
Salmonid alphavirus infection in Atlantic salmon : viral properties and host responses to infection
(PhD Thesis;2015:2, Doctoral thesis, 2017-07-04)Pancreas disease (PD) is a contagious viral disease in salmonid aquaculture in Europe and North America. PD is caused by salmon pancreas disease virus also referred to as salmonid alphavirus (SAV), which belongs to the ... -
Something in the way you move : studies of movement asymmetry in young Standardbred trotters
(PhD Thesis;2021:22, Doctoral thesis, 2021)Lameness is a major welfare issue in athletic horses. Traditional lameness evaluation is based on subjectively assessing whether the horse shows asymmetrical movement, and this can be challenging. Sensor-based systems ... -
Streptococcus-like infections in farmed tilapia (Oreochromis niloticus) of Lake Kariba : characterization of pathogenic species and host responses
(PhD Thesis;2021:35, Doctoral thesis, 2021)Zambia is one of the largest aquaculture producers in sub-Saharan Africa, with tilapia production having increased exponentially during the last 20 years. Lake Kariba is the most active commercial fish farming site in the ...