Blar i Doctoral theses (IHA) på tittel
Viser treff 31-44 av 44
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Optimal use of plant protein concentrates in extruded feeds for carnivorous fish
(PhD Thesis;2011:53, Doctoral thesis, 2011)The main objective of the research presented in this thesis was to evaluate multiple amino acidsupplemented plant protein concentrates as the main protein source in diets for carnivorous fish. This objective was approached ... -
Physical and social environment for sheep : effects on spacing behaviour, social interactions and activity budgets in housed ewes
(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 ... -
Protein quality evaluation of animal protein ingredients applied in extruded dry dog food using mink (Neovison vison) as a model species
(PhD Thesis;2016:78, Doctoral thesis, 2020-11-24)Determination of protein and amino acid (AA) digestibility is essential for protein quality evaluation of dog foods, and should preferably be measured as standardized ileal digestibility (SID). Assessment of protein ... -
Quantitative genetics of traits related to disease resistance and effects of vaccination in Atlantic salmon (Salmo salar)
(PhD Thesis;2011:39, Doctoral thesis, 2011)Disease resistance is of major importance to the fish farming industry as disease outbreaks have negative effects on the industry’s economy, its reputation and on fish welfare. Today, almost all fish in the Norwegian salmon ... -
Rearing Norwegian Red heifers : growth and effects on subsequent milk production of primiparous cows
(PhD Thesis;2015:48, Doctoral thesis, 2019-01-07)The thesis is part of a larger research project aiming to determine the impact of calf and youngstock development on dairy cow production and profitability. Paper I utilized field data to find a more marginal effect of ... -
Strategies for improving dairy goat kid rearing systems for milk and meat production in Norway, Tanzania and milk utilization in Malawi
(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 ... -
Strategies for improving productivity of small ruminants in Tanzania
(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 ... -
Stress responsiveness in salmonids : effects on genes, organs, and organisms
(PhD Thesis;2011:06, Doctoral thesis, 2011)Stress is an inescapable burden for fish like for all other animals. For individuals that frequently encounter stressful situations, repeated or prolonged physiological stress responses, can potentially compromise the ... -
Tetradecylthioacetic acid (TTA) – A functional feed ingredient for Atlantic salmon (Salmo salar L.): Growth, sexual maturation and health
(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, ... -
The effect of pancreas disease and salting conditions on the quality of raw and cold-smoked Atlantic salmon (Salmo salar L.)
(PhD Thesis;2011:07, Doctoral thesis, 2011)Fillet quality of farmed Atlantic salmon (Salmo salar L.) is affected by a broad range of preand post-mortem factors. This thesis focuses mainly on the impact of pancreas disease (PD), salt composition and salting method ... -
The influence og dietary fatty acid composition and sex on pork quality
(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 ... -
Tick-borne fever in sheep : production loss and preventive measures
(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. ... -
Upgrading plant ingredients in feed for salmonids by thermo-mechanical treatment and acid salts
(PhD Thesis;2011:52, Doctoral thesis, 2011)Inclusion of plant ingredients in diets for salmonids is restricted due to low energy contents, unbalanced amino acid (AA) composition and presence of antinutritional factors (ANF). The objective of this thesis was to ... -
Variation at early life stages of Atlantic salmon : relationships between emergence time and stress coping styles
(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 ...