Uppsatser om production traits

39 uppsatser · sida 1 av 3

Estimation of heterosis and performance of crossbred Swedish dairy cows

Masteruppsats · SLU

… breed group effect for several traits included in the Nordic breeding goals: production, fertility, udder health, calving performance, survival and other diseases. Breeding within the Holstein dairy breed has earlier been focused on increased milk production and conformation …

What traits make Swedish dairy cows survive?

Masteruppsats · SLU

… often argued that longevity has been decreasing due to a strong selection for production traits in dairy cattle.The aims of this study were to find correlations between different longevity evaluations and between different estimates on longevity and other traits in the Nordic …

Avelsarbete med mjölkproducerande getter ? fokus på Norge och Frankrike

Kandidatuppsats · SLU

… years and they have large economic importance for the farmers. Seasonally reproduction has been observed in goats from temperate areas. Ovulation is stimulated by using light treatments, hormonal treatments or introduction of bucks. Improvement of functional traits and disease …

Breeding practices of Red Maasai sheep in Maasai pastoralist communities

Masteruppsats · SLU

… about farmers having different prerequisites and how it can affect the sheep production. The reason for keeping sheep and the specific breeds show the multiple objectives of the Maasai farmers. Adaptive traits, such as resistance to diseases and droughts, and productive traits …

Arvets betydelse för mjölkkors beteende :

Examensarbete · SLU

… behaviour traits in the selection for dairy cows to be suitable in the production systems of today. The purpose of this investigation was to study the genetic background to behavioural traits and the heritabilities for temperament, rank order, aggressiveness, feeding behaviour …

Rörelseanalys med tillämpning av inversdynamik

en pilotstudie på frisk labrador retriever

Övrigt arbete · SLU

… lot of different qualities as itis water rejecting and easy to form. The wool production today is concentrated to specificplaces in the world which leads to environmental problems and a distorted market. InJämtland, a province in Sweden, there is right now a staking going on for …

Är merinokorsningar ett alternativi jämtländsk fårhållning?

Masteruppsats · SLU

… lot of different qualities as itis water rejecting and easy to form. The wool production today is concentrated to specificplaces in the world which leads to environmental problems and a distorted market. InJämtland, a province in Sweden, there is right now a staking going on for …

Importance of epigenetics in animal breeding

genomic imprinting

Kandidatuppsats · SLU

… from. These parent-of-origin effects are currently overlooked in livestock production. Many economically important traits in livestock are so called quantitative traits, some of which have shown indication of being partially controlled by imprinted genes. A variety of imprinted …

Nyttjande av korsningar i mjölkproduktionen

Kandidatuppsats · SLU

… breed. Throughout crossbreeding, the farmers can combine functional and production traits of different dairy breeds and utilize the heterosis effects which emerge when two or more breeds are crossed. Results from different studies with Holstein crossed with Jersey, Brown Swiss …

Kalvningsintervall hos svenska köttkor

finns det genetisk variation som kan användas i avelsarbetet?

Examensarbete · SLU

… fertility of the beef cows is important for the profitability in beef cattle production. Today there is no genetic evaluation for female fertility in Swedish beef cows. The purpose of this study was to see if calving interval can be used in the genetic evaluation as a measure of …