1. What is Mare Gestation?

The average gestation period for mares is approximately 340 days (11 months), though normal gestation can range from 320 to 370 days. This calculator provides an estimated due date based on the standard 340-day gestation period recommended by The Horse.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Explanation: The calculation adds 340 days to the breeding date to estimate the foaling date. This is based on the average gestation period for horses.

3. Importance of Accurate Due Date

Details: Knowing the estimated due date helps in preparing for foaling, scheduling veterinary checks, and ensuring proper care during the final stages of pregnancy.

4. Using the Calculator

Tips: Enter the breeding date (date of successful breeding or last breeding). The calculator will estimate the foaling date based on 340 days gestation.

5. Frequently Asked Questions (FAQ)

Q1: Is 340 days always accurate?
A: No, it's an average. Normal gestation can range from 320 to 370 days depending on breed, season, and individual mare factors.

Q2: What factors affect gestation length?
A: Breed, season (mares bred in spring tend to have longer gestations), age of mare, and sex of foal (colts often carried longer).

Q3: When should I start watching for foaling signs?
A: Begin close monitoring about 30 days before the estimated due date, as mares can foal earlier than expected.

Q4: Should I rely solely on this calculator?
A: No, use this as a guide along with veterinary monitoring and observation of the mare's physical changes.

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.