Blar i Doctoral theses (BioVit) på tittel
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Rearing of Norwegian Red replacement heifers; Short- and long-term effects of dietary energy and protein levels on growth characteristics and adipose tissue gene expression
(PhD thesis;Thesis number 2019:12, Doctoral thesis, 2019)This thesis is part of a larger research project aimed at assessing the impact of calf and youngstock development on dairy cow production and profitability. The potential impact of heifer growth on future milk yield has ... -
Reproductive and Genetic Studies in Large Yellow Croaker
(Doctoral thesis, 2021-12-15)Large yellow croaker (Larimichthys crocea) is distributed in the coastal regions of East Asia and is one of the most important marine aquaculture species in China. However, due to overfishing, it has been difficult to ... -
Sensitivity of plants exposed to gamma radiation : a physiological and molecular study
(PhD Thesis;2019:100, Doctoral thesis, 2019)Sessile organisms such as plants need to cope with a range of changing environmental conditions and stressors, including ionizing radiation like gamma, beta or alpha radiation and non-ionizing radiation (UV-A and UV-B ... -
Sheep breeds in contrasting environments - pasture utilization at different spatiotemporal scales
(PhD Thesis;2018:24, Doctoral thesis, 2018)In Norway, approximately 2 million sheep are released onto outer fields for summer grazing. Indeed, during the summer months sheep are the most common large herbivores in most Norwegian mountain areas. The sheep, of which ... -
Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) in Benin: feasibility of biological control
(PhD Thesis;2022:73, Doctoral thesis, 2022)Since its outbreak in 2016 Spodoptera frugiperda (Lepidoptera: Noctuidae) commonly known as fall armyworm (FAW) has caused significant consequences on a range of crops, especially on maize, which is a staple food in most ... -
Starch digestion dynamics in broiler chickens as affected by structural components, starch properties and level of inclusion
(PhD Thesis;2019: 57, Doctoral thesis, 2019)Quantitatively, starch is the most important component and the major energy source in poultry diets. Although it is commonly believed that the broiler chicken has a large capacity to digest starch, numerous studies have ... -
Sugarcane production in Malawi : pest, pesticides and potential for biological control
(PhD Thesis;2018:65, Doctoral thesis, 2018)Sugarcane is an importance source of energy and livelihoods worldwide. The production of sugarcane is significantly affected by several insects, weeds and pathogens commonly referred to as pests. In addition, climate ... -
Supplying dairy cows with Propionibacterium to reduce enteric methane emission
(PhD Thesis;2021:16, Doctoral thesis, 2021)The primary target of this research was to explore the ability of promising propionibacteria strains to reduce the enteric methane emission from dairy cows. The second objective was to study the effect of propionibacteria ... -
Supplying dairy cows with Propionibacterium to reduce enteric methane emission
(PhD thesis;2021:16, Doctoral thesis, 2021)The primary target of this research was to explore the ability of promising propionibacteria strains to reduce the enteric methane emission from dairy cows. The second objective was to study the effect of propionibacteria ... -
Sweet potato production in South Sudan : current status, virus infections and whitefly vector diversity
(PhD Thesis;2019:98, Doctoral thesis, 2019)Sweet potato (Ipomoea batatas (L.) Lam.) is an important staple food crop that assures food security in sub-Saharan Africa, especially East Africa. In South Sudan, sweet potato is a main staple food crop for many farming ... -
Sweet potato virus in Ethiopia : detection, characterization, elimination and management
(PhD Thesis;2019:94, Doctoral thesis, 2019)The initiative to improve sweet potato production and productivity in Ethiopia began in the 1980s and so far, there are 26 improved sweet potato varieties made available for farmers. Lack of a rigorous quarantine scheme ... -
Tetradecylthioacetic acid (TTA) : a functional feed ingredient for Atlantic salmon affecting early sexual maturation, cardiac robustness and β-oxidative capacity
(PhD Thesis;2018:36, Doctoral thesis, 2018)Utilisation of fatty acids highly dominates energy metabolism in high performance fish as the Atlantic salmon. It is well established knowledge that feed intake and growth of salmon is highly influenced by water temperature ... -
The neural basis of threat-sensitive behaviour in fish
(PhD Thesis;2015:6, Doctoral thesis, 2020-11-10)Fear, or threat-sensitive behaviour, is an emotionally guided response allowing animals to minimize exposure to potential danger. Stress is a set of physiological/behavioural responses to such exposure. Among other ... -
Towards a genome wide understanding of salmon lipid metabolism gene regulation across tissues and life stages
(PhD Thesis;2019:40, Doctoral thesis, 2019)Atlantic salmon is an important source of essential omega-3 fatty acids in human diets; however, omega-3 content in farmed salmon has been decreasing over the past decade due to the replacement of fish oil in aquafeeds ... -
Using genome-wide associations, predictions, and selection to improve fusarium head blight disease resistance in wheat
(PhD thesis;2023:39, Doctoral thesis, 2023)Wheat is a well-adapted hexaploid crop and is a staple food for most parts of the world, commonly called bread wheat (Triticum aestivum L.). The history of first cultivation of wheat dates back to 10 000 years ago. It is ... -
Very-long-chain polyunsaturated fatty acids and their biological functions
(PhD Thesis;2023:83, Doctoral thesis, 2023)The overall aim of this thesis was to gain insight into the bioavailability of dietary very-long-chain polyunsaturated fatty acids (VLC-PUFAs) and their potential effects on skin and bone health. While well-known omega-3 ... -
Whole-farm modelling of greenhouse gas emissions from suckler cow beef production
(PhD Thesis;2019:93, Doctoral thesis, 2019)The main objective of this thesis was to develop a whole-farm model adapted to the various production systems and natural resources in Norway, estimate the level and variation in greenhouse gas (GHG) emission intensities ... -
Yeast (Cyberlindnera jadinii): an alternative protein source in pig and poultry feed
(PhD Thesis;2019:87, Doctoral thesis, 2019)The demand for food protein sources continues to increase rapidly along with the World population. Consequently, the European livestock industry requires a growing supply of feed protein to meet these demands. Furthermore, ...