Sökning: "chickens"

Visar resultat 11 - 15 av 58 avhandlingar innehållade ordet chickens.

  1. 11. Genetic analysis of autoimmune and metabolic traits in chickens

    Författare :Weronica Ek; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Studying how changes in DNA affect organisms and gene functions, can give us an increased understanding of the genetic regulation of diseases and metabolic traits. Chickens and other farm animals have long been used as a tool to study human diseases and other complex traits since they provide an excellent opportunity to study these traits in a controlled environment. LÄS MER

  3. 12. A flying start : Adapted hatching and post-hatch feeding in broiler chickens

    Författare :Malin Boyner; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Conventional hatching practices do not involve provision of feed and water to broiler chickens before placement at the rearing farm. This can pose problems, especially for early hatchlings, which remain feed-restricted for a considerable period due to biological variation in hatch time. LÄS MER

  4. 13. Production of polyclonal antibodies in rabbits and chickens immunised with human immunoglobulin G : A study of the utility of egg yolk antibody production as a substitute for rabbit serum antibody production

    Författare :Lise Svendsen Bollen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Laboratory animals; antibody production; egg yolk; adjuvants; antibody response; avidity; Försöksdjursvetenskap; Laboratory animal science; Försöksdjursvetenskap; zoologisk utvecklingsbiologi; Animal Development;

    Sammanfattning : The utility of chicken egg yolk antibodies as an alternative to rabbit antisera was studied by comparing antibody and avidity development in immunised animals (15 rabbits and 30 chickens) during a one-year immunisation scheme. Human IgG was used as the model antigen and the efficacy of three adjuvants, Freund's Complete Adjuvant, Freund's Incomplete Adjuvant and Hunter's TiterMax, was compared. LÄS MER

  5. 14. Effects of domestication related genes on behaviour, physiology and gene expression in chickens

    Författare :Anna-Carin Karlsson; Per Jensen; Randi Oppermann Moe; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Domestication, the process when animals adapt to captivity, tends to modify a whole array of traits towards what has been termed “the domesticated phenotype”, where the domesticated animal differs from its wild ancestor in morphology, physiology, development and behaviour. Physiological traits and behaviours are controlled by genes. LÄS MER

  7. 15. Exploring the Realm of Gene Expression Differences Between White Leghorn and Red Junglefowl Chickens

    Författare :Carolyn Fitzsimmons; Leif Andersson; Finn Hallböök; Dave Burt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular genetics; chicken; gene expression; microarray; polymorphism; Genetik; Genetics; Genetik;

    Sammanfattning : In this thesis we attempted to elicit patterns of gene expression that influence phenotype, and that may also have been altered by thousands of years of domestication and selection, between red junglefowl and White Leghorn chickens. Red junglefowl are the wild ancestor to all domesticated chickens, and poultry in general are highly valued as a research animal and food resource. LÄS MER