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Mare Gestation Calculator

Mare Gestation Calculator

Primary Calculations

Estimated Foaling Date:
Number of Days In Foal:

Follow-up Ultrasounds

Two Weeks: Pregnancy Check & Twin Detection:
One Month: Heartbeat Verification:
Two Months: Fetal Sexing:

Vaccination Schedule

Five Months: Rhinopneumonitis Vaccine:
Seven Months: Rhinopneumonitis Booster:
Nine Months: Final Rhinopneumonitis Vaccine:
One Month Before Foaling: Pre-Foaling Preparation:

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.