Equine Oviduct Dysfunction

Although an uncommon cause of infertility, oviduct dysfunction should be considered when other etiologies are excluded. Pregnancy was never detected in a 5-year-old Standardbred mare despite good breeding management that included artificial inseminations with fresh semen from four fertile stallions during 12 estrous cycles over two breeding seasons. No genital tract abnormalities were apparent ultrasonographically and hysteroscopically and the mare had a normal karyotype. The mare was referred for a thorough examination of the genital tract and evaluation of the oviducts. [...]