Some of it is just a marketing scam. The seller wants you to think the heifer is so good that want to keep the genetics from it. they do this in hopes that the animal will fetch a higher price. You see it alot with big time breeders.
I have a 16 month old bull who failed his recent semen test. the first time he was tested he was barely a yr old and tested good. This time his mobility was less than 60% and he had crocked tails on some of the good sperm. My question is can I feed him different or make sure he is getting more...