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DOI: 10.1055/s-0038-1623484
Intersexualität beim Pferd – Pseudohermaphroditismus masculinus bei einer Bayerischen Warmblutstute
Intersexuality in the horse – male pseudohermaphroditism in a Bavarian Warm Blood marePublication History
Publication Date:
05 January 2018 (online)
Zusammenfassung
Bei einer sechsjährigen Bayerischen Warmblutstute konnte hengstartiges Verhalten beobachtet werden. Das äußere Erscheinungsbild der Geschlechtsorgane wies keine Auffälligkeiten auf. Das innere Genitale bestand aus einer blind endenden Vagina, die über ein strangartiges Gebilde mit intraabdominal liegenden Hoden in Verbindung stand. Der Testosteronwert des Pferdes lag im hengsttypischen Bereich. Durch eine zytogenetische Untersuchung konnte ein XY-Genotyp und mittels einer PCR das geschlechtsdeterminierende SRY-Gen nachgewiesen werden. Anhand dieser Befunde wurde ein Pseudohermaphroditismus masculinus diagnostiziert. Um die reiterliche Nutzung auch weiterhin zu gewährleisten, erfolgte eine bilaterale Gonadektomie via Flankenschnitt von der linken Seite.
Summary
In a six-year-old Bavarian Warm Blood mare stallionlike behaviour was observed. The external genital organs did not show any abnormalities. The internal sexual organs consisted of a blind ending vagina which was in connection with intraabdominal testes. Testosteron concentration was similar to those of normal stallions. A cytogenetic examination revealed the XY-genotype and the sex determining SRY-gene was found using a PCR technique. Based on these findings male pseudohermaphroditism was diagnosed. To keep the mare as a saddle-horse a bilateral gonadectomy through the left flank was performed.
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