Sökning: "crossbreeding"
Visar resultat 16 - 20 av 21 uppsatser innehållade ordet crossbreeding.
16. Könssorterad sperma för ökad lönsamhet i mjölkproduktion : är könssorterad sperma ett alternativ?
Kandidat-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)Sammanfattning : Könssorterad sperma är selekterad sperma. Vid användning av X-Vik fås kvigkalvar med en 90 % säkerhet och vid användning av Y-Vik kan man med 85 % säkerhet säga att en kalv kommer bli en tjur. LÄS MER
17. Den svenska lapphunden - en ras i behov av förändring?
Kandidat-uppsats, SLU/Dept. of Animal Environment and HealthSammanfattning : Many pedigree dogs are suffering from inherited diseases or personality disorders caused by selective breeding. The Swedish lapphund is a breed that has been suffering from some loss of genetic variation due to the heavy use of only a few males. Concerns have arisen and crossbreeding has been discussed as a way to manage gene loss. LÄS MER
18. Variation i fruktsamhet hos semingaltar
Magister-uppsats, SLU/Dept. of Animal Breeding and GeneticsSammanfattning : Artificial insemination (AI) has had a great influence on the development of pig production and is today widely practiced (Gerrit et al., 2005). With AI, genetic progress can at a short period of time be spread worldwide compared with using natural service and the best boars can be intensively used. LÄS MER
19. Crossbreeding in dairy cattle
Kandidat-uppsats, SLU/Dept. of Animal Breeding and GeneticsSammanfattning : The aim of this literature review is to give an overview of the differences between pure- and crossbreeding systems. Crossbreeding is a mating system with individuals of different lines or breeds. It is one of several breeding strategies in dairy production used to increase the economic profit. LÄS MER
20. Nyttjande av korsningar i mjölkproduktionen
Kandidat-uppsats, SLU/Dept. of Animal Breeding and GeneticsSammanfattning : Farmers’ main reason for crossbreeding dairy cows is that they have seen a decline in functional traits, especially in the Holstein 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. LÄS MER