[ghaff]

Don't know where the pig farms are around my town--New England, so a lot of farms are fairly small--but there's a dairy farm down the street alongside houses, people have goats and chickens, there's some light industry including a junkyard just down the road. (With respect to farming specifically, like many Massachusetts towns, it's a "right to farm" community, which means with some restrictions farming activities are generally allowed.)

Now you certainly can't walk places for the most part if that's why you want mixed zoning.