Mare Gestation Formula:
Where:
DD = Due Date
BD = Breeding Date
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The mare gestation calculation estimates the due date for a pregnant horse by adding 340 days to the breeding date. This is the average gestation period for horses, though it can vary between 320-370 days.
The calculator uses the simple formula:
Where:
Explanation: The calculation adds 340 days (average horse gestation period) to the known or estimated breeding date.
Details: Knowing the expected foaling date helps in proper mare management, scheduling veterinary care, and preparing for foaling.
Tips: Enter the exact breeding date if known, or your best estimate. The result will show the expected due date 340 days later.
Q1: Is 340 days always accurate?
A: No, it's an average. Mare gestation can range from 320-370 days, with 340 days being most common.
Q2: What factors affect gestation length?
A: Breed, season, mare's age, and foal's gender can all influence gestation length.
Q3: When should I start monitoring the mare closely?
A: Begin close monitoring about 2-4 weeks before the calculated due date.
Q4: Can ultrasound predict a more accurate due date?
A: Early pregnancy ultrasound can help confirm conception date but doesn't predict exact foaling date.
Q5: What if my mare goes past the due date?
A: Consult your veterinarian if gestation exceeds 365 days as this may indicate a problem.