It doesn't matter what kind of animals you have. If you are East of the Mississippi (and even in some regions directly west of the Mississippi, like Missouri & Arkansas) you do NOT have a ranch. It's a farm.
Milk cows = dairy farm, not a ranch.
Pigs = farm or factory farm, depending on setup (yeah, I know there is a new acronym. Don't care.)
There is no such thing as a chicken or turkey ranch, either.
Ranch = large acreage grasslands or scrub land with large animals (not pigs) typically kept for meat (not dairy). Usually western land...
Growing up, Hobby farms were called Farmettes (rhymes with the name Annette) with great disdain. They weren't liked by the local farmers AT ALL and they really weren't welcome in the neighborhood.