Genetics Selection Evolution

, 37:S109 | Cite as

Mapping quantitative trait loci for milk production and genetic polymorphisms of milk proteins in dairy sheep

  • Francis Barillet
  • Juan-José Arranz
  • Antonello Carta
Open Access


In this paper, we present recent advances in the molecular dissection of complex traits in dairy sheep and discuss their possible impact on breeding schemes. In the first step, we review the literature data on genetic polymorphisms and the effects of sheep αs1-casein and β-lactoglobulin loci. It is concluded that the results are rather inconsistent and cannot be used in dairy sheep selection. In a second step, we describe the strategy implemented in France, Italy and Spain taking advantage of the genetic maps for QTL detection. These studies were part of a European project, called "genesheepsafety", which investigated both milk production and functional traits. Preliminary QTL results are presented for production traits.


dairy sheep milk proteins genetic polymorphisms QTL milk production 

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Copyright information

© INRA, EDP Sciences 2005

Authors and Affiliations

  • Francis Barillet
    • 1
  • Juan-José Arranz
    • 2
  • Antonello Carta
    • 3
  1. 1.Station d'amélioration des animauxInstitut national de la recherche agronomiqueCastanet-Tolosan CedexFrance
  2. 2.Departamento de Produccion AnimalUniversidad de LeonLeonSpain
  3. 3.Istituto Zootecnico e Caseario per la SardegnaOlmedoItaly

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