I ended up with 7 heifers out of 8. My friend who used it on 30 ended up with around 2/3 heifers. I'm still not sure if it works or not. To put things in perspective I have family that has 80 commercial cows. They used nothing but natural service bulls and had 75% heifers. If you are gonna make a judgement you should probably use this product for a couple years to sort out the freak years when you are just heifer heavy.
NOt sure I want to even be on this board. But we used it quite heavily and it was about 60%. Used it on donor cows and Ai cows. Seem to get just the oppisite of what we wanted on certain cows.
I bought a heifer last fall that was bred with heifer plus & ultrasounded with a heifer calf. Something must have been wrong with the calf because it was held together with nuts.