A growth QTL affects emotionality and sociality in chickens
2010 (English)In: Behavior Genetics, ISSN 0001-8244, E-ISSN 1573-3297, Vol. 40, no 6, 819-819 p.Article in journal, Meeting abstract (Other academic) Published
Domestic animals have long been selected for preferable physiolog-ical traits such as high body weight, fast growth rate, high milk yieldetc. Whether intentional or not, this intense selection has also had sideeffects on the behaviour of animals. Such side effects may be due to pleiotropy of production related genes, or close linkage with genes affecting behaviour. In this study we aimed at investigating the genetic factors responsible for changes in production traits and their correlation to behaviour by comparing birds from an advanced intercross between domestic White Leghorn laying hens and their wild ancestor, the red junglefowl. Social behaviour and emotional reactivity of chickens homozygous for a White Leghorn allele of agrowth QTL (‘‘WL genotype’’) was compared to that of chickens homozygous for the red junglefowl allele (‘‘RJF genotype’’). Young WL genotype birds reacted in a more passive manner to a simulated predator attack and interacted more with their mirror image. When adult, WL genotype birds required more induction attempts before entering tonic immobility than RJF genotype birds. These results suggest that the growth QTL affects a number of domestication related behavioural traits, and may have been a primary target of selection. The QTL contains a multitude of genes, several of which have been linked to social behaviour in other species. Future studies aimed at making a higher resolution phenotypic characterization of the QTL should give more information about which of these genes may be considered candidates for bringing about the behavioural changes associated with animal domestication.
Place, publisher, year, edition, pages
Springer-Verlag New York, 2010. Vol. 40, no 6, 819-819 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-64769DOI: 10.1007/s10519-010-9392-7ISI: 000284696200126OAI: oai:DiVA.org:liu-64769DiVA: diva2:394844
40th Annual Meeting of Behavior-Genetics-Association, State Coll, Pennsylvania, PA, USA, MAY, 2009