THERIOGENOLOGY
(North America), and the possibility of a prolonged post-partum anestrus period. However, not every mare is a suitable candidate for foal-heat breeding and each foaling mare should be considered as an individual. Evaluation of foaling ease and passage of the placenta, a thorough physical and reproduc- tive examination performed approximately 6 to 8 days postpartum and monitoring the development of the dominant follicle prior to and after day 10 will provide critical information for a foal-heat breeding decision. Adherence to sound reproduc- tive management guidelines can yield an accept- able pregnancy rate while minimizing pregnancy loss. Mares that do not qualify for a foal-heat breeding may be short cycled by administration of prostaglandins approximately 5 to 6 days after the foal-heat ovulation.
Acknowledgments
Declaration of Ethics The Author has adhered to the Principles of Veter- inary Medical Ethics of the AVMA.
Conflict of Interest The Author has no conflicts of interest.
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