Linebreeding, and inbreeding in my opinion are fine, as stated before, we often want to carry positive traits over into the next generation of cattle, BUT I recently obtained several cows from a neighbor that are the result of multiple generations of inbreeding, and the cows are showing some very poor inherited genetic conmfirmation problems, such as poor feet, and hunched backs, which does seem to happen with the Angus in some cases. it has been said here before, it seems the real difference in line breeding and inbreeding, is that we call it linebreeding when everything goes well, and inbreeding when things start going bad.