Preliminary observations on the occurrence of the equine X0 syndrome

Authors: Henderson LM, Jaine PM, Walker KS, Chapman HM, Blue MG, Bruere AN
Publication: New Zealand Veterinary Journal, Volume 26, Issue 6, pp 145-146, Jun 1978
Publisher: Taylor and Francis

Animal type: Horse, Livestock
Subject Terms: Biosecurity, Congenital disease, Genetics, Diagnostic procedures, Disease surveillance, Reproduction, Oestrus/oestrous, Reproduction - female
Article class: Scientific Article

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Abstract: Clinical and cytogenetic observations were made on seven mares which had never bred when sent to stud. In six of these, the chromosome count was 63,XO with one X chromosome missing and, in one case, two cell lines were present with a 63,XO/64,XX chromosome constitution. All mares showed signs of the equine Turner`s syndrome and it is suggested that sex chromosome abnormalities may be quite a common cause of sterility in the mare.

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