OMIA:000084-9940 : Atresia ani vaginalis in Ovis aries (sheep)

Categories: Digestive / alimentary phene

Mendelian trait/disorder: unknown

Considered a defect: yes

Cross-species summary: In females, congenital absence of the anus is often accompanied by a rectal-vaginal fistula (tube-like passage between the rectum and vagina), allowing urine and faeces to be voided through the vulvar orifice.

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2005). OMIA:000084-9940: Online Mendelian Inheritance in Animals (OMIA) [dataset].


1985 Swartz, H.A., Vogt, D.W., Michalski, K.A., Warren, J.E., Kiesling, D. :
Chromosomal evaluation of a ewe lamb with atresia ani vaginalis American Journal of Veterinary Research 46:2145-2146, 1985. Pubmed reference: 4062021.

Edit History

  • Created by Frank Nicholas on 06 Sep 2005