That brings me to another question I had. I am a little familiar with air but not very, am it possible to inseminate without an ultrasound machine? I use my own stallions for my Colombian mares but I breed my ppr mare to a ppr stallion. She is very nervous and I do want to breed her back this year but am leery of loading them up in a trailer and taking them to be bred. I trust the stallion owner, but am afraid of the trailer ride (it is an hour away) none of the vets in the area have a portable ultrasound machine.

Another question, do you breed your older mares every year? (I have heard that if you do not keep the older mares in foal they may become harder to settle) and if this is true how old is old?