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Co-segregation of behaviour and production related traits in an F3 intercross between red junglefowl and White Leghorn laying hens
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology.
2005 (English)In: Livestock Production Science, ISSN 0301-6226, E-ISSN 1872-6070, Vol. 94, no 3, 149-158 p.Article in journal (Refereed) Published
Abstract [en]

In poultry breeding, selection for production traits may cause side-effects on the physiology and behaviour of the birds with a potential influence on animal welfare. Genetic associations between phenotypic traits can be studied in an intercross of two divergent breeds. In advanced generations, traits controlled by the same genes or by genes located close to each other will co-segregate. Our aim was to study if behavioural styles expressed by red junglefowl (n=26) and White Leghorn (n=26) in a social vs. exploration motivation test as well as breed-differences in contrafreeloading (CFL), an energy demanding feeding strategy, would co-segregate with production related traits in their F3 intercross progeny (n=78). The results revealed Leghorns to maintain closer social contact in the test, whereas junglefowl, which according to previous studies have also a higher degree of CFL, were more active and explorative. Furthermore, these behavioural differences correlated with several production related traits, such as growth and residual feed intake (RFI), in the F3 generation. F3 birds with higher levels of production related traits behaved in a fashion resembling Leghorns more than junglefowl. Both in parental animals and the F3 birds, the above effects were clearest among females. The results, thereby, suggest that selection for high production in fowl may simultaneously have side-effects on sociality and foraging. This could further influence the general capacity of birds to cope with environmental challenges such as exploring a novel environment. The genetic mechanisms underlying this co-segregation remain to be investigated.

Place, publisher, year, edition, pages
2005. Vol. 94, no 3, 149-158 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-42128DOI: 10.1016/j.livprodsci.2004.10.010Local ID: 60614OAI: oai:DiVA.org:liu-42128DiVA: diva2:262983
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13Bibliographically approved
In thesis
1. Characterisation of social behaviour in red junglefowl and White leghorn laying hens: phenotypic and genetic studies
Open this publication in new window or tab >>Characterisation of social behaviour in red junglefowl and White leghorn laying hens: phenotypic and genetic studies
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The objective of this thesis was, by using two model strains of chicken, red junglefowl and White Leghorn layer, to study differences in social behaviour of the species that could be derived from domestication and production related selection processes. The social phenotype characterisation was done to be able to further study the association of the social differences to specific production related traits as well as to certain genome areas in intercross and backcross lines generated from these two parental populations.The first part of the thesis covers phenotypic differences between the two parental stocks in social motivation (sociality), social discrimination ability and preferences as well as the dynamics of aggression and hierarchy establishment under unstable social circumstances. These features are crucial for the coping of fowl in its social environment. The underlying social motivation and related characteristics were measured first in chicks, while the fourth study was designed to investigate if the social motivation differences across the breeds would persist into adulthood and if so, would correlate with various production related traits, as growth and egg production, in the F3 progeny. The last paper analysed the effect of genotype along a domestication linked Growth1 QTL on some of the social behaviour differences. The behaviour tests revealed a consistent breed specific behavioural difference, which was linked to the novelty and stressfulness of each test situation. The junglefowl chicks behaved in a manner that is considered to be adaptive in the wild; they for instance explored and foraged more in the novel environment. Conversely, the Leghoms appeared more fearful and showed a higher level of attachment to familiar companions in the tests. These breed specific behaviour patterns persisted over age and correlated also with several production related traits in the F3 progeny. Even though selection for egg production has affected the social behaviour only on a quantitative level (frequencies and intensities) the dynamics of aggression and hierarchy establishment differed remarkably between the breeds when studied in unstable groups; Leghoms responded to regrouping with greater aggression and had more difficulties to adapt to strangers. The genetic study in the last paper revealed a link between social motivation and exploratory behaviour and two adjacent marker areas within the Growth1 QTL, indicating at least two involved genes in this area. The conclusion of this thesis is that social motivation, which is considered to underlie most social behaviour traits in fowl, has been influenced by selection for high production in the studied White Leghom stock in comparison with junglefowl. Furthermore, the found breed differences seem to segregate together with some production related traits in an advanced intercross generation, and to be associated with a QTL-region, which has been suggested to play an important role in the domestication of chickens.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet, 2005. 62 p.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 970
Keyword
Red junglefowl, social behaviour, behaviour tests
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-30343 (URN)15880 (Local ID)91-85457-24-8 (ISBN)15880 (Archive number)15880 (OAI)
Public defence
2005-10-19, Sal Planck, Fysikhuset, Campus Linköping, Linköping, 10:00 (Swedish)
Opponent
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2012-12-05

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Väisänen, JohannaLindqvist, ChristinaJensen, Per

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