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1 July 1992 Freemartinism in a Captive Herd of Rocky Mountain Bighorn Sheep (Ovis canadensis)
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Abstract

Freemartinism in two animals from a captive herd of Rocky Mountain bighorn sheep (Ovis canadensis) at the Denver Zoological Gardens (Denver, Colorado, USA) is described. A young ewe had female external genitalia, a masculine appearance, and demonstrated male behavior as she matured. Another ewe with female external genitalia died as a yearling. Necropsy revealed a non-patent vagina and internal male genitalia. Both females were chimeric with karyotypes containing XX and XY sex chromosomes.

Kenny, Cambre, Frahm, and Bunch: Freemartinism in a Captive Herd of Rocky Mountain Bighorn Sheep (Ovis canadensis)
David E. Kenny, Richard C. Cambre, Michelle W. Frahm, and Thomas D. Bunch "Freemartinism in a Captive Herd of Rocky Mountain Bighorn Sheep (Ovis canadensis)," Journal of Wildlife Diseases 28(3), 494-498, (1 July 1992). https://doi.org/10.7589/0090-3558-28.3.494
Received: 21 May 1991; Published: 1 July 1992
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