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Peer-reviewed veterinary case report

An abortion of monozygotic twins in a warmblood mare.

Journal:
Reproduction in domestic animals = Zuchthygiene
Year:
2009
Authors:
Govaere, J et al.
Affiliation:
Department of Reproduction Obstetrics and Herd Health
Species:
horse

Plain-English summary

This study talks about a rare case involving a warmblood mare who was pregnant with identical twins. After being pregnant for 260 days, she had an abortion, resulting in one healthy foal and one foal that was mummified, meaning it did not develop properly. This situation is unusual in horses, as identical twins are very uncommon. The outcome was that the mare lost both foals.

Abstract

Naturally occurring monozygotic twins are extremely rare in the horse. This paper describes an abortion in a mare after 260 days of pregnancy with monozygotic twins, one a fresh foal and the other a mummified foal.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/19055562/