Horses » Phantom Pregnancy in mares

Melody

Phantom Pregnancy in mares

Last August one of the stallions escaped into the field and spent the night with the mares. 2 are definately in foal. My mare who was 3 at the time has not come into season either after this or this year. On inspecting her at the weekend, her nipples are showing. Her temperermant hasn't changed and she has not had a foal before. How will I know if she is pregnant or if it is a phantom pregnancy? She has not shown any interest in any of the stallions when they have been tied up outside her stable, and they haven't in her. She is my first horse so am new to all this.

8/3/06

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Martina Stuart

The quickest way to find out what is going on inside her is to get an experienced equine vet to do an internal examination. They would be able to tell you if she is pregnant and check her ovaries at the same time if she is not pregnant. As far as other tests are concerned a positive urine test will indicate that if she is pregnant but a negative test could be misleading. It is possible that she has just not started cycling yet this year and the teat enlargement is only indicating that she is maturing.

8/3/06

Melody

How long are mares pregnant for in days? I know it is 11 months but what about days. Thanks

13/3/06

Martina Stuart

The gestation period of the mare can vary from 330 to 370 days. The quickest way to calculate when a foal is due is to go forward 1 year back 1 month and forward 1 week from the date of last service. It is unusual for a mare to carry for more than 350 days and 333 can be taken as a good yardstick. Sorry to be a bit vague but that's horses for you.

13/3/06

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