Mare Gestation Calculator

How to Use the Mare Gestation Calculator

The Mare Gestation Calculator is a helpful tool designed to assist horse breeders in estimating the gestation period and important dates related to mare pregnancy. Follow the steps below to effectively use this calculator.

Step 1: Input Breeding Information

• Select the Breeding or Ovulation Date: Choose the exact date when the mare was bred or ovulated. This is a required field, and the date should fall between January 1, 2023, and December 31, 2025.
• Choose the Breeding Type: Specify the type of breeding performed. Select between “Natural Breeding” and “Artificial Insemination” options. This is also a required field.

Step 2: Understanding the Calculated Results

Once the necessary inputs are provided, the calculator will compute and display several important dates and information:

• Expected Due Date: The calculator will estimate the due date by adding 340 days to the breeding date. It will be presented in the format of YYYY-MM-DD.
• Earliest Possible Due Date: This date is calculated by adding 320 days to the breeding date.
• Latest Possible Due Date: The date determined by adding 365 days to the breeding date for the latest possible term of the pregnancy.
• First Ultrasound Check: The recommended period for the first ultrasound check, calculated as 14-16 days post-breeding. The calculator will use 15 days for its estimation.
• Second Ultrasound Check: Suggested time for the second ultrasound, estimated at 25-30 days post-breeding, with a calculation based on 28 days.

Step 3: Monitoring Gestation Progress

In addition to important dates, the calculator provides ongoing gestation monitoring details:

• Current Gestation (Weeks): Displays the number of weeks of gestation based on the current date and the breeding date. This is calculated by dividing the days elapsed since the breeding date by 7.
• Remaining Days Until Due Date: This field shows the number of days left until the estimated due date. It is the result of the difference between today’s date and the due date, ensuring that the count does not go below zero.

By following these steps, users can effectively track and manage mare pregnancies using this comprehensive gestation calculator tool. Remember to consult with a veterinary professional for any specific concerns or deviations in your mare’s gestation timeline.