Blar i Doctoral theses (BioVit) på tittel
Viser treff 36-55 av 74
-
Growth, stomatal responses and postharvest characteristics of Rosa x hybrida : the influence of air humidity and light quality
(PhD Thesis;2013:77, Doctoral thesis, 2013)Greenhouse production systems are important in the production of vegetables, herbs and ornamentals. Roses are among the most valuable crops in the greenhouse floriculture industry and are produced as pot plants or as a cut ... -
Identification of photoreceptors with functional characterization of photolyase in Pseudoidium neolycopersici
(PhD Thesis;2021:72, Doctoral thesis, 2021)Powdery mildew caused by Pseudoidium neolycopersici is one of the most destructive diseases, occurring predominantly on greenhouse grown tomatoes, and has gained importance worldwide due to severe economic losses in terms ... -
Identification of sperm parameters and gene variants influencing boar fertility
(PhD Thesis;2018:37, Doctoral thesis, 2018)Boar fertility has a major impact on overall pig reproductive efficiency, and good semen quality is essential for successful fertilization and proper embryo development. Thus finding semen characteristics that can predict ... -
Improved starch and protein utilization by extruded feed pellets targeted to benefit dynamics of rumen digestion in dairy cows
(PhD Thesis;2021:15, Doctoral thesis, 2021)To meet their requirements for energy and amino acids, high-producing dairy cows are fed compound feeds containing high amounts of starch and protein. Optimal utilization of these high-quality feeds is critical, where the ... -
Improving the utilisation of phytate-bound phosphorus in feed for poultry and pigs through increased efficacy of exogenous phytase in the anterior digestive tract
(PhD Thesis;2020:76, Doctoral thesis, 2020)The majority of phosphorus (P) in feedstuffs is present as phytate-P. Phytate is the storage form of P in seeds and grains and consists of an inositol ring with six phosphate groups bound to it. The phytate-P is only ... -
Integrated weed management in Teff - case of Tigray, Ethiopia
(PhD Thesis;2019:22, Doctoral thesis, 2019)Teff (Eragrostis tef (Zucc.) Trotter) is among the small-grained cereal crops dominantly grown in Ethiopia for its grain and straw. It belongs to the family Poaceae. It is a self-pollinated, annual, warm season C4 grass, ... -
Interactions between the cereal aphid pests Sitobion avenae and Rhopalosiphum padi and their fungal natural enemies
(PhD Thesis;2019:70, Doctoral thesis, 2019)In agronomy, efficient plant protection strategies are required to reduce pest pressure and increase crop yield. Pesticide application has been the dominant method for plant protection for almost a century. However, the ... -
Management of genomic inbreeding in breeding schemes
(PhD Thesis;2019:25, Doctoral thesis, 2019)The overall aim of this research work was to explore strategies that manage genetic variation at the genomic level in the era of powerful genomic selection methods. In paper 1, the role of alternative genomic relationship ... -
Multivariate analyses of milk infrared spectra and predictions from it in dairy cattle populations
(PhD Thesis;2017:65, Doctoral thesis, 2017)Fourier-transform mid-infrared (FT-MIR) spectra of milk is one of the multivariate information routinely recorded by many milk-recording organizations in the world. Use of such information is becoming central to research ... -
A new approach for predicting milk production responses and feed utilization in dairy cows
(Doctoral thesis, 2021)Feed evaluation systems (FESs), such as the Nordic Feed Evaluation System (NorFor), aim to help dairy producers compare the nutritive value of various types of feed, formulate of balanced diets, and predict animal performance ... -
Non-additive genetic effects in Nile tilapia
(PhD Thesis;2018:101, Doctoral thesis, 2018)Nile tilapia (Oreochromis niloticus) is the world’s fastest growing aquaculture species, in terms of annual increase in production (ca 10%) and is today produced world-wide. Most of the commercial and farmed Nile tilapia ... -
Novel indicator traits for individual feed efficiency in Atlantic salmon (Salmo salar)
(PhD Thesis;2019:02, Doctoral thesis, 2019)Selective breeding for enhanced feed efficiency in aquaculture production has so far been performed indirectly, largely through selection for an improved growth rate. However, a substantial fraction of the genetic variation ... -
Novel protein sources in diets for weaned piglets – effect on growth performance, gut function, and health
(PhD Thesis;2022:50, Doctoral thesis, 2022)The world is facing a growing food demand from an ever-increasing population. To meet this challenge, new resources must be utilized through innovative solutions. Meat is a valuable protein source in the human diet. However, ... -
Nutritional, health, and technical properties of black soldier fly (Hermetia illucens) in Atlantic salmon (Salmo salar) feeds
(PhD Thesis;2021:79, Doctoral thesis, 2021)Black soldier fly (BSF) (Hermetia illucens) has been identified as a promising novel ingredient in fish feeds. The knowledge on optimal downstream processing of BSF is, however, lacking in the literature. The main objective ... -
Participatory and collaborative approaches in sustainability transitions : niche innovations in agri-food systems
(PhD thesis;2023:60, Doctoral thesis, 2023)Agri-food systems contribute to and face sustainability challenges across the entire value chain, from production, distribution, processing to retailing, consumption, and wastage. Organic farming, localized food systems, ... -
Plant-parasitic nematodes of the Ethiopian food security crop enset (Ensete ventricosum) : occurrence, distribution, characterisation and management
(PhD Thesis;2021:32, Doctoral thesis, 2021)To confront the challenges of eradicating hunger and improve food security, agricultural growth needs to be driven by intensification. This in turn increases the threat of pests and diseases, including plant-parasitic ... -
Potato soft rot Pectobacteriaceae in Norway – seed potato health, association with insects and molecular mechanisms of disease development
(PhD Thesis;2018:92, Doctoral thesis, 2018)Soft rot Pectobacteriaceae are among the most problematic pathogens of a wide variety of crop plants and ornamentals. Among their hosts is potato, the most important food crop in Norway, where the bacteria cause soft rot ... -
Quantitative genetics of growth rate and carcass quality traits in Atlantic salmon
(Phd Thesis;2021:39, Doctoral thesis, 2021-05-06)Quantitative genetic parameters of quality traits and growth rate in Atlantic salmon are commonly recorded at a target average market body weight (4-5 kg) at which the individuals are at the same age, which is less labour ... -
Rapeseed co-products in pig diets : effects on nutrient and energy digestibility and metabolism
(PhD Thesis;2017:90, Doctoral thesis, 2017)The European pig industry is heavily dependent on imported protein feedstuffs, particularly soybean meal (SBM). Increased and more efficient use of locally produced protein sources, such as rapeseed (RS), could alleviate ...