Hi Everyone I'm new to breeding and ultrasounding but have owned horses all my life. I have a couple of questions. First... What is the earliest to ultrasound to confirm pregnancy? Second, I have a mare that last time she was bred she conceived twins and one had to be pinched off - does this mean she has a higher risk of having twins again? And, third, if she does have twins again what is the latest to have on pinched?
Thanks everyone, I love this bulletin board! I have learned so much! Pam
Pregnancies can be detected in some research instances as early as 9 days post ovulation per ultrasound, however for general practice purposes 14 days is most commonly the earliest that pregnancy checking is routinely performed.
The likelihood of twinning repetition will depend a little upon the cause - barren mares have the highest percentage of twinning (it's nature's way of helping increase the odds of getting pregnant), so if she is not barren this year, there will be a lower chance. Having said that, there is a genetic component in some instances, in which case obviously there is still an increased chance. It is better to play safe and presume that twins are a risk.
Check out the article on our site about twinning which will I think answer a lot of your questions (follow that link to go to it).
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