OMIA:000781-9940 : Patent urachus in Ovis aries (sheep)

In other species: dog , domestic cat , Grevy's zebra , white rhinoceros

Categories: Embryo phene

Mendelian trait/disorder: unknown

Considered a defect: yes

Cross-species summary: The urachus is a canal present in the foetus, connecting the bladder with the allantois via the navel. It normally disappears after birth. A patent urachus is one which persists after birth, allowing urine to drip out of the bladder through the umbilicus.

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2005). OMIA:000781-9940: Online Mendelian Inheritance in Animals (OMIA) [dataset].


1969 Dennis, S.M. :
Patent urachus in a neonatal lamb Cornell Veterinarian 59:581-584, 1969. Pubmed reference: 5389256.

Edit History

  • Created by Frank Nicholas on 06 Sep 2005