Genetics of horn growth in cattle

Absence of horns is controlled by a single dominant inherited mutation which was already mapped in the bovine genome. The location of an interacting second mutation responsible for the sex-influenced expression of scurs is still unclear.

Fiche signalétique

  • Département HESB|Haute école des sciences agronomiques,forestières et alimentaires
  • Pôle de recherche Systèmes de production agricole économes en ressources
  • Champ de recherche Production animale et détention de chevaux
  • Durée (prévue) 01.04.2012 - 31.03.2015
  • Responsable du projet Cord Drögemüller
  • Direction du projet Hannes Jörg
  • Équipe du projet Hannes Jörg
    Natalie Wiedemar
    Cord Drögemüller
  • Partenaires - établissements de recherche, y c. BFH Universität Bern, VetSuisse
  • Mots-clés genome wide association, cattle, polled, animal welfare, next generation sequencing

Contexte initial

Genome-wide association study (GWAS) to map the scurs mutation. An across-breed fine-mapping of the scurs mutation. Identification of all variants in the critical interval between P/P and P/P resp. Sc/Sc and Sc/Sc animals. Identification of candidate causative mutations. Identification of the causative mutations for polled and scurs. Implementation in breeding programs.

But

The project aims to unravel the molecular basis of the presence/absence of horns in cattle. The causal mutation would enable the precise identification of homozygous polled animals for effective introgression of polled cattle.

Compétences clés

molecular genetics and population genetics