INFERTILITY IN THE HORSE ASSOCIATED WITH CHROMOSOMAL ABNORMALITIES |
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| Authors: | J P Hughes DVM AT rommershausen-Smith PhD |
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| Institution: | Department of Reproduction, School of Veterinary Medicine, University of California, Davis 95616, United States of America |
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| Abstract: | SUMMARY Reproductive failure was studied in 12 phenotypically normal mares (9 Arabian, 3 Quarter horses, 1 Appaloosa and 1 pony). Karyotyping was performed using lymphocytes isolated from peripheral blood by density gradient procedures, followed by standard culture methods for karyotyping. Nine mares had karyotypes of 63,XO; 1 had 63,XO/64,XX; 1 had 63,XO/64,XY and 1 had 64,XY. All mares had small, firm ovaries that when removed and examined from 4 mares, lacked germ cells and consisted of undifferentiated ovarian stroma. |
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