Mare Gestation Calculator
Primary Calculations
Estimated Foaling Date:
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Number of Days In Foal:
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Follow-up Ultrasounds
Two Weeks: Pregnancy Check & Twin Detection:
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One Month: Heartbeat Verification:
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Two Months: Fetal Sexing:
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Vaccination Schedule
Five Months: Rhinopneumonitis Vaccine:
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Seven Months: Rhinopneumonitis Booster:
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Nine Months: Final Rhinopneumonitis Vaccine:
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One Month Before Foaling: Pre-Foaling Preparation:
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Critical Note: Vaccinations administered 30 days pre-foaling are essential for optimizing antibody transfer through colostrum. This gestation calculator is provided as a general guideline and for educational purposes. The foaling window for mares is approximately 340 days of pregnancy. Actual foaling dates may vary by up to two weeks. All follow-up ultrasounds and vaccine protocols should be confirmed.