Minimum space requirement for cattle?

What is the minimum required space per head of cattle in a feedlot?

Monoslope-6-7'' bunk space, Hoop barn with slatted floors 3-4'', outside lot bunk space gets closer to 12'' in my experiences.

Oil but how many sq feet of like living ground or total pen size is need per head or is bunk size the only required thing

Monoslopes are usually between 32-35 square feet and slatted confinements are down to 25-23 square feet.  Outside lots however I don't have a number for you, I forget that one.

Might not hurt to check with someone at the Cattleman's Association on this. They may be able to help out. I'd say check with the DNR but no need to involve them until it's absolutely necessary. But I'm sure there might be a permitting process involved if you are thinking about construction.