i agreee but then the dept of ag are not thinking about the aesthestics only the technicality, technically you can keep pigs in a concrete pit, it won't harm the pigs but would do nothing for my soul. We've been knee deep in mud and throwing up new fencing to move the pigs round, it's no fun working in mud and i like my pigs to have something to root in after all that's what nature intended. i wouldn't put more than 2 breeding sows on that acreage and you'd want to aim to sell as many piglets as possible as weaners, it's amazing how quickly they turn the grass to soil.
good luck, Helen