Faculty of Biosciences (BioVit): Recent submissions
Now showing items 581-600 of 1102
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Interactive effects of dietary and environmental challenges on digestive function and intestinal homeostasis in rainbow trout (Oncorhynchus mykiss)
(PhD Thesis;2016:82, Doctoral thesis, 2016)Aquaculture is challenged by various dietary and environmental factors. A widely debated and studied dietary challenge is the inclusion of plant ingredients containing anti-nutritional factors (ANFs) in salmonids diet. ... -
Hydrolysis of Atlantic salmon (Salmo salar) rest raw materials : influence of process conditions and evaluation of hydrolysate in diets for broiler chickens and piglets
(PhD Thesis;2015:85, Doctoral thesis, 2018-04-25)Annually Norway produces 1.3 million tons of Atlantic salmon and the levels of production are still rising. After withdrawal of eviscerated fish and filet, 336 000 tons of rest raw material are available for further ... -
Evaluation of the use of fractional abundance of stable carbon and nitrogen isotopes and indigestible inert marker in diets and faeces to calculate apparent digestibility of carbon and nitrogen
(Master thesis, 2018)The study carried out to test the feasibility of calculating apparent digestibilities (AD) of carbon and nitrogen with diets in fishmeal (FM), soybean meal (SBM), and rapeseed meal (RSM) as the main sources of protein by ... -
Survey report on the potential of establishing tilapia farm in Ivory Coast
(Master thesis, 2017-12)This report was made during a 7 month survey on the potential of establishing tilapia farm in Ivory Coast. The aim of the report is to be a source of information on the technical and social aspects of establishing a tilapia ... -
Avrenning fra sulfidholdig stein til brakkvann : avsetning av metaller i blåskjell og fisk
(Master thesis, 2017)I denne masteroppgaven har det blitt studert forurensning i Kaldvellfjorden (Lillesand). Etter vegbygging (E18 Grimstad-Kristiansand) med sprenging av sulfidholdig gneis ble det laget et deponi. Det er blitt dokumentert ... -
Effects of fat soluble vitamins on viral infection and antiviral responses in Atlantic salmon (Salmo salar L.) erythrocytes
(Master thesis, 2017)Viral diseases are vital challenges in the aquaculture industry. In Norway, heart- and skeletal muscle inflammation (HSMI) is one of the major viral diseases affecting Atlantic salmon. In mammals, low vitamin D has been ... -
Chemical changes seen in protein during pelleting : a literature review
(Master thesis, 2017)Pelleting induced changes in protein denaturation with exposure to heat is to milder level. Denaturation of protein showed better digestibility of protein molecule. Change in the secondary structure i.e. alpha helix, beta ... -
Changes in gene expression induced by hypoxia in cultured gas gland cells from Atlantic cod (Gadus morhua)
(Master thesis, 2017)Low level of oxygen, called hypoxia, triggers the transcription of regulatory genes that promote O2 delivery and anaerobic metabolism. The majority of this transcriptional response to hypoxia is mediated by the Hypoxia ... -
Alliances for sustainable farmland management : a case study of the farmland preservation movement and a CSA Initiative in Norway
(Master thesis, 2017)The global community fails to manage farmland the way it demands for and consequently faces major challenges loss of farmland as a result of urban expansion. This is also the case in Norway. While the topic of farmland ... -
Combining preservation with production : livelihood strategies and innovations on nature pasture based farms in Dalsland, Sweden
(Master thesis, 2017)Biodiversity loss is a global problem that can lead to serious consequences. One of the most biodiverse habitats today is the product of extensive agriculture: semi-natural pastures, often termed High Nature Value (HNV) ... -
Operational optimization of Biofilm Membrane BioReactor (BMBR) for decentralized wastewater treatment
(Master thesis, 2018)Biofilm Membrane BioReactor (BMBR) is a promising technological combination of moving bed biofilm reactor (MBBR) with membrane bioreactor (MBR) for municipal and industrial wastewater treatment. It has resulted in prominent ... -
Ultraviolet radiation as a tool to control Tetranychus urticae in greenhouse production
(Master thesis, 2017)Tetranychus urticae Koch has an ubiquitous distribution, is remarkably polyphagous and is known to be the most acaricide resistant arthropod. This thesis examines how short wavelengths of ultraviolet radiation (UV) can be ... -
Creating resilience against climate change and population growth through agroecosystem restoration : the case of Abreha we Atsbeha, Northern Ethiopia
(Master thesis, 2017)In Africa, where 65% of the continent’s population use subsistence agriculture to create their livelihoods, projected changes to rainfall patterns, warmer average temperatures and rapid population growth will place increasing ... -
Impact of preharvest relative air humidity and postharvest modified atmosphere packaging on cucumber fruit quality
(Master thesis, 2017)The effect of relative air humidity (RH) was tested on the cucumber (Cocktail, Quarto F1 cultivar) plant growth, morphology and fruit quality in controlled growth chambers. The plants were grown at moderate RH (60%) and ... -
Celestial ecology : multiple ontologies of plant breeding
(Master thesis, 2017)This study investigates the role that concepts of nature play in contemporary plant breeding practices, primarily in the Wageningen University plant breeding department but also among biodynamic breeders and breeders working ... -
Which is the future for ICTs-based services in agricultural extension in India?
(Master thesis, 2017)This report aims to deliver a state-of-the-art of new opportunities in information dissemination in rural India. Today, agricultural information transfer mechanisms are mostly generated by the public agricultural extension ... -
Genetic analyses of feed efficiency traits in pigs
(PhD Thesis;2016:55, Doctoral thesis, 2017-12-12)The main objective of this thesis was to establish more detailed measurements feed efficiency in Norwegian Landrace and Norwegian Duroc in order to genetically improve this trait without negative consequenses for other ... -
A comparison of organic grass-clover silages from primary growth and regrowth in dairy cows
(PhD Thesis;2016:24, Doctoral thesis, 2017-12-06)The annual milk yield of Norwegian organic dairy cows increased by 18% in 2013 compared to 2007 levels. The increased milk yield in this period was achieved by increased levels of concentrate feed in the diet. Given that, ... -
Improving the accuracy of genomic predictions in numerically small populations
(PhD Thesis;2016:20, Doctoral thesis, 2017-12-06)Genomic selection (GS) is increasingly being implemented in livestock, especially in the dairy cattle sector. While dairy cattle populations such as Holsteins have benefitted greatly from GS in the accuracy of evaluation ... -
Inbreeding determined by the amount of homozygous regions in the genome
(PhD Thesis;2015:41, Doctoral thesis, 2017-11-30)The main aim of this PhD was to study long homozygote segments present in the genome in Norwegian Red, and find genomic options to measure inbreeding more accurately than from a pedigree database. Prior to the study, runs ...