Browsing Faculty of Biosciences (BioVit) by Title
Now showing items 496-515 of 1079
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Genetic diversity in five chicken lines from the Norwegian live poultry gene bank
(Master thesis, 2017)Since 1995, there has been no active breeding of commercial egg layers in Norway. The last active breeding lines, as well as other breeds of conservation value are conserved in the Norwegian live poultry gene bank. The aim ... -
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 engineering and light quality as tools to control shoot elongation in poinsettia (Euphorbia pulcherrimaWilld ex Klotzsch)
(PhD Thesis;2013:42, Doctoral thesis, 2013)Poinsettia (Euphorbia pulcherrima Willd ex Klotzsch) is a non-food and non-feed, vegetatively propagated ornamental plant which is among the economically most important ornamentals worldwide. Desirable plant height is one ... -
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. ... -
A genetic investigation of yellow rust resistance i Norwegian wheat
(Master thesis, 2020)This thesis is a preliminary study of the genetic basis for resistance to the fungal disease yellow rust caused by Piccinia striiformis Westend f.sp tritici, (Pst) in MASBASIS, a core collection of spring and winter wheat ... -
Genetic linkage mapping and the detection of SNB resistance QTLs in Avocet x T9040 wheat field trials in the period 2012-2022
(Master thesis, 2023)With the large scientific strides made in recent years when it comes to genome sequencing, techniques for plant breeding based on genomic data is on the rise. With the ever-changing environment and the increase of ... -
Genetic parameters and response to selection for body weight, fillet traits, body size traits and survival in Nile Tilapia (Oreochromis niloticus)
(Master thesis, 2017)This study evaluates the genetic parameters and selection responses in relation to harvest body weight, fillet yield, fillet weight, body size traits (length, depth, thickness) and survival of GenoMar Supreme Tilapia (GST™) ... -
Genetic parameters of a commercial Atlantic cod (Gadus morhua) breeding program
(Master thesis, 2014-02-18)Despite many quantitative genetic studies on Atlantic cod (Gadus morhua) over the last two decades, the magnitude of heritabilities and genetic correlations for some economic important traits (growth rate, carcass quality ... -
Genetic studies of Nile tilipia (Oreochromis niloticus) for farming in northern Vietnam : growth, survival and cold tolerance in different farm environments
(PhD Thesis;2010:04, Doctoral thesis, 2010)The present work explores genetic parameters for growth, survival and cold tolerance of tilapia in different farm environments in northern Vietnam. The results are important for further development of selective breeding ... -
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 studies on improvement of striped catfish (Pangasianodon hypophthalmus) for economically important traits
(PhD Thesis;2010:43, Doctoral thesis, 2010)The aim of this study was to find non-invasive methods for measuring fillet weight, fillet yield and fillet fat on striped catfish (Pangasianodon hypophthalmus), to examine the magnitudes of genetic variance and covariance ... -
Genetic study on health and robustness in Norwegian Landrace
(Master thesis, 2015-11-04)For swine production to be as efficient as possible and to value animal welfare, it is important to have robust and healthy pigs. A breeding sow that can thrive and nurture healthy piglets in different environments is a ... -
Genetic variation and allelic imbalance in a selection of genes in breast cancer patients
(Master thesis, 2010-10-22)Genetic variation, such as Single Nucleotide Polymorphisms (SNPs), are naturally occurring characteristics of the genome that differs between individuals of a species, and in some cases affect the risk of developing a ... -
Genetic variation and management of the Norwegian horse breeds
(PhD Thesis;2011:05, Doctoral thesis, 2011)The Norwegian horse breeds suffer from strong competition in the market from imported, specialized breeds. Decreasing population sizes, especially for the Fjord, the Døle and the Nordland/Lyngen, and risk of rapid accumulation ... -
Genetic variation in anther extrusion in oats and its relationship to Fusarium
(Master thesis, 2015-02-26)Anther extrusion (AE) is a trait that has been studied in wheat for its influence on Fusarium head blight. Fusarium is a disease causing great problems in Nordic small grain production, particularly in oat. However, AE ... -
Genetic variation in egg traits and early survival in rainbow trout
(Master thesis, 2021)In farmed rainbow trout a large part of fertilized and incubated eggs and alevins are lost from fertilization until first feeding. The present study was conducted to estimate the overall means of different egg traits 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. ... -
Genetic variation in relation to stress from computed tomography in Norsvin Landrace pigs
(Master thesis, 2019)Resilience towards stress is an important trait as it has implications for animal welfare, and can reduce labour costs. Though some traits included in breeding programs cover disease resilience, general resilience towards ... -
Genetic variation in susceptibility of Atlantic salmon (Salmo salar L.) to salmon lice, Lepeophtherius salmonis, from field and challenge tests
(Master thesis, 2018)Sea lice, Lepeophtheirus salmonis (L. salmonis) is the major threats for Norwegian salmon farming industry and the cost of the parasite was estimated to be around five billion NOK per year. Chemical treatments have been ... -
Genetic variation in the haemoglobin of the Atlantic cod(Gadus morhua) in trans-Atlantic populations
(Master thesis, 2012-10-05)It can be concluded that Val55-Ala62 haplotype predominated in the Greenland, Canadian, Iceland, and Lofoten NEA, Østersjøen Inner while Met55-Lys62 was mainly found in Østersjøen outer and Skagerrak/Kattegat. The Canadian ...