OMIA 000941-9940 : Split upper eyelid defect in Ovis aries

Mendelian trait/disorder: unknown

Considered a defect: yes

Species-specific symbol: SUED

Species-specific description: Crosses among various rare breeds of sheep (mainly Jacob's Sheep and Hebridean) suggested that the presence of a split in the eyelid appears to be associated with the presence of 4 horns (Henson, 1981). See also polyceraty.


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.
2017 Gascoigne, E., Williams, D.L., Reyher, K.K. :
Survey of prevalence and investigation of predictors and staining patterns of the split upper eyelid defect in Hebridean sheep. Vet Rec :, 2017. Pubmed reference: 28780532. DOI: 10.1136/vr.104082.
1981 Henson, E. :
A study of the congenital defect 'split eyelid' in the multihorned breeds of British sheep Ark 8:84-90, 1981.

Edit History

  • Created by Frank Nicholas on 06 Sep 2005
  • Changed by Frank Nicholas on 15 Aug 2017