Foal Gestation Calculator

Fill in lines 1. and 2., Calculate on line 3.

1. Enter the last date the mare was bred:    
2. Enter estimated gestation period in days:
Normally calculated at 340 days.

days 
  
 Week 2 (2 weeks to 18 days) 
      
- First Ultrasound or palpation to detect pregnancy
  / /
 Week 4 - 1st Month 
      
- Second ultrasound or palpation to detect heart beat
  /
 Week 12 - 3rd Month 
     
Give all vaccinations recommended for your area
     - Worm the Mare
  /
 Week 20 - 5th Month 
      
- First Equine Rhinopneumonitis Vacc
  /
 Week 28 - 7th Month 
      
-
Equine Rhinopneumonitis Vacc
  /
 Week 36 - 9th Month 
      
- Third Equine Rhinopneumonitis Vacc
  /
 Week 44 - 11th Month 
      
- Give all vaccinations recommended for your area
         so mare produces antibodies in colostrum.
 
     
- Worm the Mare 
      - Begin watching for waxing and other signs of early foaling.
  / /
 Due Date   / /
 
Disclaimer: It is the mare owner's responsibility to consult their vet with regard to broodmare health care. This Calendar is a guideline for a personal use only.