There are some interesting biologically activated manure teas that call for cow pee.I always wondered how one was supposed to obtain it.
Pigs are said to be able to get a large portion of their nutrition from cow dung.
Chickens also will scratch through all kinds of manure for food,including fly larva.
The advantage of these stacked systems is all
feed gets used as much as possible before becoming fertilizer,and each set of animals will harvest from the next,largely without your help.
Assuming an overnight stall big
enough for at least two cows, a stable would also have a milking stall, feed storage,equipment storage,and good ventilation.
I would want hard surfaced slanted floors leading to drains,for cleaning ,and/or saving pee,etc.
I would also want doors/sliding panels on each side of the building, for ventilation and cleaning.