Based on the experiences of some of you out there, what is the general rule of thumb concerning inbreeding of cattle? Specifically with just stocker cows, not purebreds. I have been told that you can breed a bull to it's daughter, but not it's grandaughter. Is this true? And what about a bull back to it's mother? Common sense tells me that that is not wise, but I don't know. Hopefully some of you will. Thanks, and any input would be appreciated.