Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 403494
Title Across-Line SNP Association Study for Direct and Associative Effects on Feather Damage in Laying Hens
Author(s) Biscarini, F.; Bovenhuis, H.; Poel, J.J. van der; Parmentier, H.K.; Jungerius, B.J.; Arendonk, J.A.M. van
Source Behavior Genetics 40 (2010)5. - ISSN 0001-8244 - p. 715 - 727.
DOI http://dx.doi.org/10.1007/s10519-010-9370-0
Department(s) Animal Breeding and Genetics
Adaptation Physiology
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) quantitative trait loci - open-field response - 2 different ages - pecking behavior - multilevel selection - genetic-parameters - domestic chicks - serotonin - young - cannibalism
Abstract An association study between SNP markers and feather condition score on the back, rump and belly of laying hens was performed. Feather condition score is a measure of feather damage, which has been shown to be closely related to feather pecking behaviour in hens housed in groups. A population of 662 hens was genotyped for 1536 SNPs of which 1022 could be used for the association study. The analysis was conducted across 9 different lines of White Leghorn and Rhode Island Red origin. Across lines linkage disequilibrium is conserved at shorter distances than within lines; therefore, SNPs significantly associated with feather condition score across lines are expected to be closer to the functional mutations. The SNPs that had a significant across-line effect but did not show significant SNP-by-line interaction were identified, to test that the association was consistent across lines. Both the direct effect of the individual’s genotype on its plumage condition, and the associative effect of the genotype of the cage mates on the individual’s plumage condition were analysed. The direct genetic effect can be considered as the susceptibility to be pecked at, whereas the associative genetic effect can be interpreted as the propensity to perform feather pecking. Finally, 11 significant associations between SNPs and behavioural traits were detected in the direct model, and 81 in the associative model. A role of the gene for the serotonin receptor 2C (HTR2C) on chromosome 4 was found. This supports existing evidence of a prominent involvement of the serotonergic system in the modulation of this behavioural disorder in laying hens. The genes for IL9, IL4, CCL4 and NFKB were found to be associated to plumage condition, revealing relationships between the immune system and behaviour.
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