Blar i Doctoral theses (BioVit) på tittel
Viser treff 16-35 av 74
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The effect of freezing and thawing on water flow and pesticide leaching in partially frozen soil: Soil column experiments and model development
(;2019:20, Doctoral thesis, 2019)Increased pesticide concentrations have often been detected in soil leachate, drain discharge and surface runoff during freeze/thaw periods in late winter and early spring, both in Norway and Sweden. Limited knowledge and ... -
Epigenetic and genetic adaptation in experimental yeast populations
(PhD Thesis;2019:23, Doctoral thesis, 2019)Evolution is a highly complex process where life change over time by the influence of relatively simple forces. Bringing evolution into the lab is a valuable asset to answer questions about processes that shape evolution. ... -
Establishment of a base population for long-term genetic improvement of Nile tilapia in Ethiopia
(PhD Thesis;2019:8, Doctoral thesis, 2019)The success of genetic improvement obtained in fish breeding programs depends on the genetic diversity of the founder populations and how the base population is constructed, as they influence the genetic variation of the ... -
Evolution of flowering adaptations in temperate grasses
(PhD Thesis;2023:64, Doctoral thesis, 2023)Grasses (Poaceae) represent an unparalleled evolutionary success story and are particularly well adapted to the environmental challenges posed by temperate habitats. Crucial to their evolutionary success in temperate ... -
Focal dark spots in the skeletal muscle of Atlantic salmon : involvement of rib abnormalities, environmental factors, and local immune responses
(PhD Thesis;2023:67, Doctoral thesis, 2023)Focal dark spots (DS) represent a major fillet quality issue, leading to significant economic losses in farmed Atlantic salmon (Salmo salar L.). DS typically appear as discoloured red/black areas in the anterior hypaxial ... -
Forming links in the forage : a (meta)genome-centric metaproteomic approach to connect rumen microbial functions
(PhD Thesis;2023:59, Doctoral thesis, 2023)The rumen microbiome operates in close symbiosis with its ruminant host, where the rumen functions as a fermentation chamber for the conversion of complex recalcitrant carbohydrates into nutrients that represent the ... -
Genetic analyses of new milkability, temperament, and udder health traits for Norwegian Red cows based on data from automatic milking systems
(PhD Thesis;2020:24, Doctoral thesis, 2020)The overall aim was to investigate several novel phenotypes recorded routinely for individual cows milked in automatic milking systems (AMS). Data were gathered from 77 Norwegian dairy farms, with additional data from ... -
Genetic analyses of semen characteristics in Norwegian Red
(PhD Thesis;2021:62, Doctoral thesis, 2021)The research on the genetics of bull fertility is limited, many studies are old, estimates are often based on few observations or few bulls, and with large or lacking standard errors. With more than 20 years of data on ... -
Genetic diversity, selection signatures and nutritional composition of enset (Ensete ventricosum) from Ethiopia
(PhD thesis;2023:50, Doctoral thesis, 2023)Most of the agrobiodiversity exists in the form of landraces and wild relatives in traditional smallholderbased farming systems. This diversity mainly exists among neglected and underutilized species, so called orphan ... -
Genetic improvement of feed efficiency in dairy cattle
(PhD Thesis;2017:106, Doctoral thesis, 2017)The main objective of the thesis was to investigate the requirements and possibilities for including feed efficiency (FE) in the breeding goal in dairy cattle and hence enable the genetic improvement of feed efficiency. ... -
Genetic studies of the wheat-Parastagonospora nodorum pathosystem
(PhD Thesis;2020:21, Doctoral thesis, 2020)Septoria nodorum blotch (SNB) caused by the necrotrophic fungus Parastagonospora nodorum is the major wheat leaf blotch disease in Norway. It reduces both yield and grain quality by causing symptoms on wheat leaves and ... -
Genetic variation in recombination rates and genetic shuffling in pigs, cattle and Atlantic salmon
(PhD Thesis;2022:17, Doctoral thesis, 2022)Meiotic recombination ensures proper segregation of homologues chromosomes in meiosis while also breaking down linkage disequilibrium and creating novel haplotypes by shuffling alleles of genes located on the same chromosome. ... -
The genetics of omega-3 fatty acids in fillets of Atlantic salmon (Salmo salar L.)
(Doctoral thesis, 2019)Decreasing contents of the omega-3 fatty acids EPA and DHA in farmed Atlantic salmon reduces the nutritional value for consumers and influences physiological processes in the fish. Most studies of physiological omega-3 ... -
Genomic methods in breeding programs: Parental assignment, triploid genomics and case-parental control modelling
(Phd Thesis;2021:7, Doctoral thesis, 2021)The use of high-density single nucleotide polymorphism (SNP) genotypes enables us to perform highly accurate parentage assignment. However, dependence between loci often results in using a subset of the data to obtain ... -
Genomic prediction using high-density and whole-genome sequence genotypes
(Phd Thesis;2022:33, Doctoral thesis, 2022)The main objective of this thesis was to investigate genomic prediction methods for high-density and whole-genome sequence genotypes, with emphasis on traits that may have difficulties achieving a high prediction accuracy ... -
Genomic structural variations as drivers of adaptation in salmonid fishes
(PhD Thesis;2023:26, Doctoral thesis, 2023)Structural variations (SVs), e.g. deletions, insertions, inversions and duplications of sequences, are a major source of genomic variation affecting more base pairs in the genome than single nucleotide polymorphisms (SNPs). ... -
Genomics exploring population structure and sex determination in Atlantic cod (Gadus morhua)
(PhD Thesis;2019:102, Doctoral thesis, 2019)Atlantic cod (Gadus morhua) is a benthopelagic cold-water marine species found across the North Atlantic Ocean. Thanks to its historical and current significance as an important food resource it is one of the most well-known ... -
Genomics of bovine milk fat composition
(PhD Thesis;2018:19, Doctoral thesis, 2018)Bovine milk is a highly regarded food source. Still, some milk fatty acids may have unfavourable health effects and can influence manufacturing properties of dairy products. Individual milk fatty acids show moderate ... -
Grain yield in Norwegian spring wheat : past, present, and future : historical genetic gains, their genetic basis, and prospects of future improvement using phenomics
(PhD thesis;2023:52, Doctoral thesis, 2023)Bread wheat is among the most critical staples worldwide and is essential to Norway’s food production. The aftermath of the green revolution nearly eradicated Norwegian wheat production in the 1950s and 1960s. The lack of ... -
Growth, feed utilization, health and biometric parameters in Atlantic salmon (Salmo salar L.) - Influence of dietary protein-to-lipid ratio and body fat status
(PhD Thesis;2018:103, Doctoral thesis, 2018)Today, commercial diets for large farmed Atlantic salmon (Salmo salar L.) commonly contain 30-35 % protein and 35-39 % lipids, i.e. a ratio of protein-to-lipids below 1. Such energy dense diets have generally been shown ...