These cows always get started with this as weaned hfrs. Once in a while you will get a couple hfrs that just will not give it up -- never seen a steer keep it up.
I have had several nightmares over the years with these, and they are almost always ex-show hfrs most of the time, some times not though. Once they start, it is almost impossible to get them to stop for very long. I have even seen them lay down and nurse themselves.
I have always had a VERY good cure -- FEED the barn -- those folks don't care what they do. Unless she is the top cow here, she's outta here!
Terry