Our cattle never seem to affect the deer rotations but we have seen changing in the deer patterns when we move cattle, or add to the herd around hunting season... so we try not to do anything around hunting season to our herd but just feed them.... and deer get used to seeing farmers as well, same ole truck or tractor never seems to bother them much.... we had a young buck that used to come out and chase our truck when we were spreading pellets for the cows.... kinda funny to look back and he was running in the middle of the cows.... but he would stop and eat the protein pellets with the cows.... he was a strange one probably on someones wall now with as much protein pellets he ate.....