Theriogenology · 2000
Treatments resulting in pregnancy in nonovulating, hormone-treated oocyte recipient mares.
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Hinrichs K, Provost P J, Torello E M
Аннотация
Synchronization of follicle growth between oocyte donor and recipient mares is difficult. To avoid this, recipient mares in a clinical program were used during a period of low follicular activity, and were treated with estrogen before transfer and progesterone after transfer. Five pregnancies were established after oocyte transfer to nonovulating, hormone-treated recipient mares. One pregnancy was lost before 30 d gestation, and the other 4 foals were carried to term. One foal died at birth. Establishment and maintenance of pregnancy in these mares indicates that nonovulating, hormone-treated mares may offer an alternative to cyclic recipients in oocyte transfer programs.