I've heard that (after having an ultrasound done to determine whether the mare is at an appropriate time in her cycle) a shot of prostaglandin can be used to "short cycle" her - ie: cause her to come into heat
Do people only use this immediately prior to breeding (like, have the shot administered in anticipation of breeding her via AI a couple days later), or is it also used to alter her natural cycles and basically "set" when they should occur (I know mares aren't totally regular)...
Say I had the shot administered and brought her into heat. Then let her go through that heat and back out... would she then likely cycle again approximately 21 days later? Or would she go back to her regular heat cycle.
The reason I ask is that I have a mare who goes through silent heats. I will be having a pre-breeding exam done this spring in preparation for breeding her in early to mid June. I am wondering if it would be possible to use prostaglandin to get her on somewhat of a predictable heat cycle.