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Browsing Doctoral theses (IHA) by Issue Date 
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Browsing Doctoral theses (IHA) by Issue Date

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    • Development and functions of adipose tissue in Atlantic salmon 

      Todorcevic, Marijana (PhD Thesis;2009:42, Doctoral thesis, 2009)
      The trend in salmon aquaculture is to use feed with high lipid content. In current feeds, energy from lipids can comprise as much as 50% of the total energy, compared to 10% approximately 20 years ago. This change was ...
    • Genomic responses of salmonids to pathogenic agents and nutritional interventions 

      Škugor, Stanko (PhD Thesis;2009:43, Doctoral thesis, 2009)
      Aquaculture exposes salmonid fish to diverse stressors, including pathogens and inadequate nutrition. The identification of molecular basis underlying compromised health and growth caused by these factors is confounded by ...
    • Genetic studies of Nile tilipia (Oreochromis niloticus) for farming in northern Vietnam : growth, survival and cold tolerance in different farm environments 

      Tran, Luan Dinh (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 ...
    • Development and evaluation of 4-way crossbred chicken population in Southern Ethiopia 

      Ambaye, Fassil Bekele (PhD Thesis;2010:46, Doctoral thesis, 2010)
      Village chickens in Ethiopia are predominantly indigenous. They play an important role in the livelihood of farmers mainly by providing animal protein through meat and egg, as a source of income and family saving, and means ...
    • High quality grass silage to dairy goats : effect on energy balance, milk yield and quality 

      Dønnem, Ingjerd (PhD Thesis;2010:48, Doctoral thesis, 2010)
      The general aim of this thesis has been to investigate the effect of high quality silage, harvested at an early stage of maturity, on energy intake, energy balance, milk production and milk quality of goats. It was also ...
    • Physical and social environment for sheep : effects on spacing behaviour, social interactions and activity budgets in housed ewes 

      Jørgensen, Grete Helen Meisfjord (PhD Thesis;2010:49, Doctoral thesis, 2010)
      I innefôringsperioden blir sauen ofte holdt i et stimulusfattig miljø med høy dyretetthet og fullspaltegulv, noe som medfører begrenset tilgang til ressurser, hyppig håndtering og lite plass til å trekke seg unna eller ...
    • Genomic architecture and complex traits in norwegian red cattle 

      Sodeland, Marte (PhD Thesis;2010:50, Doctoral thesis, 2010)
      The predominant cattle breed in Norway, Norwegian Red cattle (NRF), is an admixed breed formed from local Norwegian breeds and imported animals from other Nordic breeds. The extensive phenotypic records for NRF represent ...
    • Tetradecylthioacetic acid (TTA) – A functional feed ingredient for Atlantic salmon (Salmo salar L.): Growth, sexual maturation and health 

      Alne, Henriette (PhD Thesis;2010:23, Doctoral thesis, 2010)
      Farmed Atlantic salmon (Salmo salar L.) is transferred to sea at different times during the year. Independently of time after sea transfer, the salmon experience a period of low performance, characterized by reduced appetite, ...
    • Morphological and molecular characterization of developing vertebral fusion in altantic salmon (Salmo salar) 

      Ytterborg, Elisaeth (PhD Thesis;2010:26, Doctoral thesis, 2010)
      Problems with spinal disorders in Atlantic salmon (Salmo salar) have been increasingly in focus due to the importance of this species in the aquaculture industry. Until recently, the molecular development of spinal deformities ...
    • Nutritional and anti-nutritional quality of range vegetation in southern Ethiopia and supplementary values of selected browse leaves to goats 

      Woldemariam, Aster Abebe (PhD Thesis;2010:51, Doctoral thesis, 2010)
      Livestock are reared in all agroecological zones of Ethiopia under various production systems. Goats, although found in all agroecological zones, are popular in the drier environments since they adapt well in harsh condition ...
    • Strategies for improving productivity of small ruminants in Tanzania 

      Safari, John Godfrey (PhD Thesis;2010:52, Doctoral thesis, 2010)
      This thesis presents three areas of emphasis, all related to feeds, feeding and performance of small ruminants. The first area (Paper I) focuses on seasonality and its effect on chemical composition of forage species most ...
    • Genetic studies on improvement of striped catfish (Pangasianodon hypophthalmus) for economically important traits 

      Nguyen, Sang van (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 ...
    • Improved nutritional value of fish feed with plant protein ingredients by means of organic acid salts and solid state fermentation 

      Gao, Youling (PhD Thesis;2011:23, Doctoral thesis, 2011)
      The objective of this work was to improve the nutritional value of plant protein sources to be used in fish feed by means of organic acid salts and solid state fermentation (SSF). Four studies were conducted to determine ...
    • Tick-borne fever in sheep : production loss and preventive measures 

      Grøva, Lise (PhD Thesis;2011:32, Doctoral thesis, 2011)
      A major challenge in sheep farming during the grazing season along the coast of southwestern Norway is tick-borne fever (TBF) caused by the bacteria Anaplasma phagocytophilum, that is transmitted by the tick Ixodes ricinus. ...
    • The influence og dietary fatty acid composition and sex on pork quality 

      Hallenstvedt, Elin (PhD Thesis;2011:04, Doctoral thesis, 2011)
      Norway is an important fish catching and producing country and has traditionally used fish and fish by-products in feed for monogastric animals, the pig is no exception. Fish and fish by products are excellent sources of ...
    • Strategies for improving dairy goat kid rearing systems for milk and meat production in Norway, Tanzania and milk utilization in Malawi 

      Chigwa, Fanny Chimwem (PhD Thesis;2011:50, Doctoral thesis, 2011)
      Kid rearing strategies are a key to continuous supply of milk to Dairies and reduction of kid rearing cost that will also optimize farmer’s income by increasing by-products and maintaining the beautiful cultural landscape ...
    • Variation at early life stages of Atlantic salmon : relationships between emergence time and stress coping styles 

      Serrano, Jonathan David Vaz (PhD Thesis;2011:08, Doctoral thesis, 2011)
      Captive fish are exposed to a variety of stressful situations, which can affect growth rates and promote diseases. Identification and selection for stress resistant fish at early stages of the production cycle could be ...
    • A quantitative genetic study on the proportion of males in tilapia 

      Lozano, Carlos (PhD Thesis;2011:63, Doctoral thesis, 2011)
      Early sexual maturation is one the main constraints in Tilapia farming since early breeding causes stunted growth and large size variability. To circumvent this problem all-male populations are used commercially, and ...
    • Effect of cobalt on fatty acid composition in milk of dairy cows and sows 

      Karlengen, Inger Johanne (PhD Thesis;2011:75, Doctoral thesis, 2011)
      Previous research revealed that supplementing excess cobalt (Co) reduces bovine milk content of monounsaturated fatty acids (MUFAs), probably mediated by the enzyme Δ9 -desaturase. The general aim of this research project ...
    • Genetic analyses of meat, fat and carcass quality traits measured by rapid methods 

      Gjerliaug-Enger, Eli (PhD Thesis;2011:13, Doctoral thesis, 2011)
      The overall aim of this thesis was to analyse meat and fat quality traits using quantitative genetic methods. This study has demonstrated that it is possible to establish simple laboratory practices and high quality rapid ...

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