On what day of gestation can an equine pregnancy earliest be confirmed?

The earliest day on which an equine pregnancy can typically be confirmed is Day 11. At this point in gestation, the equine embryo can be reliably detected through ultrasound or palpation. Day 11 is significant because it marks a stage when the embryo has developed sufficiently for practitioners to identify pregnancy during examinations.

Prior to this day, while it may still be possible to suspect pregnancy based on hormonal levels or behavioral changes, definitive confirmation through physical examination techniques may not be reliable until this point. The accuracy of detecting a pregnancy increases as the embryo grows, but Day 11 is generally acknowledged as the earliest timeframe for positive confirmation in veterinary practice.