Essays about: "Intercross"

Showing result 6 - 9 of 9 essays containing the word Intercross.

  1. 6. The genetic basis of a domestication trait in the chicken: mapping quantitative trait loci for plumage colour

    University essay from Biologi; Tekniska högskolan

    Author : Md. Nazmul Huq; [2012]
    Keywords : qtl; quantitative trait loci; genome scan; qtl analysis; plumage colour; domestication trait; chicken; pigmentation trait;

    Abstract : Domestication is the process by which animals become adapted to the environment provided by humans. The process of domestication has let to a number of correlated behavioural, morphological and physiological changes among many domesticated animal species. An example is the changes of plumage colour in the chicken. READ MORE

  3. 7. Detecting Major Genes Controlling Robustness of Chicken Body Weight Using Double Generalized Linear Models

    University essay from Statistik

    Author : Liming Zhang; Yang Han; [2010]
    Keywords : variance-controlling genes; quantitative trait loci; double generalized linear models.;

    Abstract : Detecting both the majors genes that control the phenotypic mean and those controlling phenotypic variance has been raised in quantitative trait loci analysis. In order to mapping both kinds of genes, we applied the idea of the classic Haley-Knott regression to double generalized linear models. READ MORE

  4. 8. Correlations between fearfulness and social behaviours in an F7 intercross of red junglefowl and White Leghorn layers

    University essay from Institutionen för fysik, kemi och biologi

    Author : Johanna Karlsson; [2009]
    Keywords : Aggression; correlations; fearfulness; intercross; leghorn layers; red junglefowl; sociality; weight.;

    Abstract : The aim of this thesis was to study chickens of an F7 intercross between red junglefowl and White Leghorn layers in five behavioural tests to see if there were any correlations between traits in the intercross. 80 animals were used (40 males, 40 females); they were tested in a tonic immobility test, an open field, a fear of human test, an aggression test and lastly a sociality test. READ MORE

  5. 9. Genetic analysis of metabolic traits in an intercross between 8-week body-weight selected chicken lines

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Weronica Ek; [2007]
    Keywords : chickens; selection; body weight; fat; breast muscle; genetics; QTL; epistasis; interaction; network;

    Abstract : Metabolic traits are of paramount importance in agricultural production, as this group includes most traits of economic interest in livestock improvement. Examples include growth rate, feed efficiency and fat deposition. READ MORE