Blar i Doctoral theses (VetMed) på forfatter "Sørum, Henning"
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Antibiotic resistance in wastewater
Paulshus, Erik (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. ... -
Bacterial impact on growth, health and disease of farmed Atlantic salmon and lumpfish
Klakegg, Øystein (PhD Thesis;Thesis number 2021:4, Doctoral thesis, 2021)Despite considerable efforts to improve production with regard to animal welfare, disease control and sustainability in Norwegian aquaculture, both losses and feed conversion rate have not declined during the last 10 years. ... -
Comparative study of challenge models to evaluate protection after immunization with Piscirickettsia salmonis
Meza Parada, Karla (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 ... -
Introductory studies on bacterial agents infecting cleaner fish
Gulla, Snorre (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 ... -
Microbe-associated molecular patterns of Aliivibrio salmonicida : roles in the pathogenesis of cold-water vibriosis
Nørstebø, Simen Foyn (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 ... -
Monitoring fish health : a vital part of salmon farming management
Persson, David Weman (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)
Helgesen, Kari Olli (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, ... -
Nutrition and intestinal health in Atlantic salmon (Salmo salar) : involvement of antinutrients and microbiota
Gajardo, Karina (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 ... -
Porcine gut microbiota, short-chain fatty acids, and gut health in response to a high yeast inclusion diet
Iakhno, Stanislav (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 ... -
Production of Atlantic salmon (Salmo salar) in closed confinement systems (CCS) : salmon lice, growth rates, mortality and fish welfare
Nilsen, Arve (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 ... -
Quinolone resistant Escherichia coli in Norwegian livestock : a comparative genomics study
Kaspersen, Håkon (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 ...