Join Date: Mar 2009
Location: Middle-of-Nowhere, Illinois
I've never heard of anything like that, but why don't you just keep your mare away from the stallions?
If there is such a thing, it doesn't sound very reliable. I wouldn't take the chance of letting another horse happen. It's a lot safer to just keep the mare and stallion separate.
"A musician must make music, an artist must paint, a poet must write, if he is ultimately to be at peace with himself.
What a man can be, he must be." Abraham Maslow, 1968