Doctoral theses (VetMed): Recent submissions
Now showing items 61-80 of 129
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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 ... -
Comparative study of challenge models to evaluate protection after immunization with Piscirickettsia salmonis
(PhD Thesis;2019:75, Doctoral thesis, 2019)The Chilean salmon industry is considered one of the most important aquaculture industries worldwide, only bypassed by Norway. In Chile, salmon represents the second-biggest export product after copper. Due to the fast ... -
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 ... -
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 ... -
Cartilage canals in the pathogenesis of osteochondrosis in horses
(PhD Thesis;2008, Doctoral thesis, 2008)Osteochondrosis (OC) is a common disease that arises in the developing joints of people, horses, pigs, dogs and other species. OC is defined as a disturbance in enchondral ossification, and in horses, the disturbance is ... -
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 ... -
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 ... -
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 ... -
Coccidiosis in lambs : treatment and control
(PhD Thesis;2018:54, Doctoral thesis, 2018)Koksidiose er forårsaket av en gruppe encellede parasitter som kalles Eimeria spp. og er en viktig produksjonsbegrensende sjukdom hos unge dyr blant flere arter, som sau, ku og fjørfe. Disse parasittene gir skader i ... -
Epidemiologic studies of bovine respiratory syncytial virus and bovine coronavirus in Norway
(PhD Thesis;2019:32, Doctoral thesis, 2019)Bovine respiratory syncytial virus (BRSV) and bovine coronavirus (BCV) cause respiratory infection in cattle worldwide. In addition, BCV also causes diarrhoea in calves and contagious diarrhoea in adult cows, i.e. winter ... -
The applicability of milking-time testing in automatic milking systems
(PhD Thesis;2020:5, Doctoral thesis, 2020)Norsk mjølkeproduksjon forandrer seg i retning større produksjonsenheter, økende bruk av automatiske mjølkingssystemer (AMS) og reduserte økonomiske marginer. Til tross for at situasjonen har forbedret seg kraftig de siste ... -
Using online cell counts for detection and prediction of subclinical intramammary infections in dairy cows
(PhD Thesis;2020:14, Doctoral thesis, 2020)Mastitis is an inflammation of the mammary gland that can result in an elevated somatic cell count (SCC). It is mainly caused by intramammary infections (IMI). Cows with mastitis can have clinical signs (clinical mastitis) ... -
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 ... -
Tick-borne encephalitis virus : a One Health approach
(PhD thesis;2020:34, Doctoral thesis, 2020)Tick-borne encephalitis virus (TBEV) is a Flavivirus which is transmitted to humans and animals by tick bites, and in rare cases by consumption of unpasteurised milk and dairy products. The virus can cause the disease ... -
Antibiotic resistance in wastewater
(PhD Thesis;2020:9, Doctoral thesis, 2020)Antibiotic resistance is a characteristic possessed by some bacteria that enables them to withstand the effects of antibiotic treatment. Antibiotic use and abuse may result in development of antibiotic resistant bacteria. ... -
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 ... -
Use of a One Health approach for understanding the epidemiology and management of anthrax outbreaks in the human-livestock-wildlife and environmental health interface areas of Northern Tanzania
(PhD thesis;2019:24, Doctoral thesis, 2019)Zoonotic diseases are infections, which are transmissible between animals and humans. In both low and middle-income countries (LMIC), animals (livestock or wildlife) and humans often live close together. In LMIC, people ... -
Effects of persistent organic pollutants (POPs) on the steroidogenesis of primary neonatal porcine Leydig cells
(PhD thesis;2019:7, Doctoral thesis, 2019)After World War II the production of manmade chemicals has increased immensely. They are made to give desired practical properties and functions. Some are added to consumer products to provide conductivity, increase flame ... -
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, ... -
Bovine coronavirus in calves : experimental studies on virus shedding, transmission and whole genome sequencing
(PhD Thesis;2018:32, Doctoral thesis, 2018)Bovine coronavirus (BCoV) is a significant cause of respiratory disease and diarrhea in calves and of winter dysentery in adult cattle. These endemic diseases result in substantial economic losses and reduced animal ...