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Topic:Embryo Transfer
Embryo transfer in horses is a reproductive technology that involves collecting a fertilized embryo from a donor mare and implanting it into a recipient mare, which then carries the pregnancy to term. This technique allows for the production of multiple offspring from a single mare within a breeding season. The procedure includes several stages: synchronization of the donor and recipient mares' estrous cycles, collection of the embryo, and its subsequent transfer to the recipient mare. Embryo transfer is utilized to enhance genetic dissemination, preserve valuable genetics, and manage breeding schedules. This page aggregates peer-reviewed research studies and scholarly articles that explore the methods, efficiency, and applications of embryo transfer in equine reproduction.
Retrospective study of factors affecting multiple ovulations, embryo recovery, quality, and diameter in a commercial equine embryo transfer program. In this study, 198 donor mares of different breeds, ages, and reproductive category were inseminated with fresh, cooled and frozen or frozen and cooled semen at the embryo transfer station or in private artificial insemination centers during 10 breeding seasons. The results of this activity were retrospectively analyzed by Pearson Chi-square test and logistic regression to evaluate factors affecting multiple ovulations, embryo recovery, embryo quality, and embryo diameter. Out of the 661 cycles, 937 ovulations were recorded (mean ovulations/cycle: 1.42 ± 0.58). Ovulation rate and incidence of...
