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Poster De Conférence Année : 2009

QTL detection for chicken production and resistance to disease traits

D.J. de Koning
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Elisabeth Duval
Frederique Pitel
F. d'Abbadie
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Pascale Le Roy

Résumé

Recently, approaches targeting the whole genome (genome wide selection, GWS) have expanded. However, using an additive model without possible interaction (epistasis) between loci, in particular between the few QTLs which explain a large part of the genetic variance of the traits, would be likely to reduce the efficiency of this strategy. In chickens, coccidiosis susceptibility is an economically important trait which could make the most of GWS. Therefore, we proposed to search for QTLs affecting coccidiosis susceptibility, to test if the selection of this trait could have an impact on production traits and to estimate the extent of the epistasis for all these traits. QTL detection and epistasis estimation are performed on two INRA experimental crosses (900 and 1200 F2 animals phenotyped for coccidiosis susceptibility and composition traits, respectively) genotyped by 1536 SNPs covering most part of the genome. Our aim is to implement these results for MAS or GWS in commercial lines. These lines represent 10 families totalling 1,000 animals which will be genotyped for 384 SNPs targeting the regions identified in the experimental designs. The first results will be presented.
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Dates et versions

hal-01193725 , version 1 (03-06-2020)

Identifiants

  • HAL Id : hal-01193725 , version 1
  • PRODINRA : 179318

Citer

Olivier Demeure, Nicola Bacciu, H. Bovenhuis, D.J. de Koning, Elisabeth Duval, et al.. QTL detection for chicken production and resistance to disease traits. Genomics for Animal Health: Outlook for the Future, Oct 2009, Paris, France. 2009, Programme and book of abstracts. ⟨hal-01193725⟩
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