Sökning: "leghorn layers"

Hittade 2 uppsatser innehållade orden leghorn layers.

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

   Master-uppsats, Institutionen för fysik, kemi och biologi

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

   Sammanfattning : 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. LÄS MER

3. 2. Behavioural effects of food deprivation on red junglefowl (Gallus gallus) and White Leghorn layers

   Magister-uppsats, Institutionen för fysik, kemi och biologi

   Författare :Jenny Lind; [2007]
   Nyckelord :fowl; chicken; hunger; food deprivation; behaviour; motivation;

   Sammanfattning : The aim of this study was to examine how food deprivation effects food-related and other behavioural systems of red junglefowl (Gallus gallus) and the domesticated White Leghorn layers. If an animal is denied to perform their natural behaviours, like eating, sleeping or preening, the motivation for the behaviour can increase. LÄS MER