We have checked quite a few Char and Angus and some X Bred bulls, maturity and feeding to good are two of worse culprits to not testing ....Some Angus bulls are ruined
from feeding to hard , on the other side if they are slow maturing it will also cause them not to pass ....No expert but sure have seen some problems over the year's in Charolais but have made great improvement's in this in that breed and are also better disposition than some ..... Today though we have the ability to add ingredients to feed or shot's to help with their ability to not breed back or test ....