Sökning: "Domestication"

Visar resultat 1 - 5 av 86 avhandlingar innehållade ordet Domestication.

  1. 1. Chicken domestication : Effects of tameness on brain gene expression and DNA methylation

    Författare :Johan Bélteky; Per Jensen; Anna Kukekova; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Domestication greatly increases phenotypic variation in a short time span, with selection for a single phenotype and a plethora of associated phenotypic changes as an outcome of the process. The domestication process influences the underlying genomic architecture of a species, and the success and speed of the process is likely influenced by it. LÄS MER

  3. 2. Early domestication? : Phenotypic alterations of Red Junglefowl selected for divergent fear of humans

    Författare :Beatrix Agnvall; Per Jensen; Hannah Rowland; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Domestication is the process through which animals adapt to conditions provided by humans. The domesticated phenotype differs from wild ancestors in a number of traits relating to physiology, morphology and behaviour. LÄS MER

  4. 3. The Physiology of Chicken Domestication : Involvement of the HPA-axis and the Autonomic Nervous System

    Författare :Magnus Elfwing; Jordi Altimiras; Michael Axelsson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Domestication; chickens; HPA-axis; autonomic nervous system; heart rate; allometry;

    Sammanfattning : Domesticering är en urvalsprocess för önskvärda egenskaper hos djur som över tid förändrar deras utseende, beteende och genetik. Några exempel av djur som genomgått denna riktade avel är vargen, mufflon, uroxen, vildsvinet och den röda djungelhönan som vi idag känner som hunden, fåret, kon, grisen och slaktkycklingen. LÄS MER

  5. 4. Folkets fonder? : En textvetenskaplig studie av det svenska pensionssparandets domesticering

    Författare :Claes Ohlsson; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Sweden; pension savings; fund industry; domestication; text analysis; discourse analysis; genre analysis; Swedish; Svenska språket Nordiska språk; pension savings; fund industry; domestication; text analysis; discourse analysis; genre analysis; Swedish;

    Sammanfattning : The social and political background for this study is the change in Sweden from a system of a collective pension scheme to a system that includes elements of individual responsibility and a higher personal involvement of Swedes in pension saving funds. This phenomenon has been conceptualized as domestication, a metaphor that serves as a unifying notion in this study. LÄS MER

  7. 5. Domestication effects on foraging behaviour : consequences for adaptability in chickens

    Författare :Christina Lindqvist; Per Jensen; Björn Forkman; Linköpings universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Etologi; chicken; domestication effects; behaviour; red jungle fowl RJF ; contrafreeloading CFL ; egg production; Ethnology; Etnologi;

    Sammanfattning : The main aim of this thesis was to study domestication effects on foraging behaviour in chickens and to investigate whether and how domestication and selection for high production have influenced adaptability in chickens. Two domestic strains of chickens (egg layers and meat type chickens) and their wild ancestor, the red jungle fowl (RJF) were compared in different test situations with respect to foraging behaviour and adaptability. LÄS MER