Sökning: "cattle"

Visar resultat 11 - 15 av 156 avhandlingar innehållade ordet cattle.

  1. 11. Working Animals and Skeletal Lesions : Paleopathology of Cattle and Horse in Iron Age and Medieval Öland, Sweden

    Författare :Ylva Telldahl; Jan Storå; László Bartosiewicz; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Skeletal lesions; draught use of cattle; sacrificed horses; Iron Age; Middle Ages; Eketorp ringfort; Skedemosse wetland; Öland; sweden; osteoarkeologi; Osteoarchaeology;

    Sammanfattning : Central to this thesis is the relationship between animal husbandry practices and the associated pathological conditions. Since bone elements from the extremities are subjected to abnormal load when animals are put to hard work this research aims to go further and interpret the prevalence of varying lesions and their connection with animal husbandry by using methods such as osteometric analysis, conventional radiograpic and bone mineral study, as well as incorporated molecular analysis. LÄS MER

  3. 12. Gene mapping of reproduction traits in dairy cattle

    Författare :Johanna Karolina Höglund; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : In this thesis my aims were to map genes affecting reproduction in cattle and to explore the correlated effect of these genes on yield traits. This knowledge is expected to provide novel insights into the biological processes underlying reproduction traits and to identify individual causal polymorphisms or genetic markers for practical application in marker-assisted and genomic selection strategies. LÄS MER

  4. 13. Crossbreeding as a strategy in dairy cattle herds

    Författare :Julie Clasen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : This thesis aimed to explore benefits of dairy crossbreeding at herd level and form recommendations for dairy farmers, advisors, and breeding companies. A survey study revealed that Swedish dairy farmers can be divided into two groups: those supporting crossbreeding and those not supporting it. LÄS MER

  5. 14. Performance of Ankole and crossbred cattle in Rwanda

    Författare :Manzi Maximillian; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The general aim of this thesis was to evaluate how effective crossbreeding could be for increasing productivity in meat and milk production in Rwanda. This was done by assessing performance of Ankole (A) and its crossbreds with exotic breeds: Brown Swiss (B), Holstein Friesian (F), Jersey (J) and Sahiwal (S). LÄS MER

  7. 15. Validation of disease recordings in Swedish dairy cattle

    Författare :Marie Jansson Mörk; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : .... LÄS MER