Not sure if these are unique to Jersey but thought I'd share a traditional Jersey pig sty set up.
They are usually found in blocks of 3 or 5 (These are 2 of 5) and are granite. I can get additional views if anyone is curious but they are a house with low doorway and opening out into a granite yard - there is a build in water trough, but also a feeder underneath the "window" style feeding shoot.
My Gran used to tell us you'd put a baby pig in, and know when to butcher him when he struggled to fit through the doorway
Not how we'd keep pigs today but a nice bit of history I think

I'd quite like something similar for isolation pens I think!