Just imagine....
People use to eat country raised dairy whey fed pork all the time, in fact I use to enter grass fed boars into Oregon FFA state competitions. Raising pork is easy, it depends on the size of the lot and what you have planted for them to eat. Then, the grasses have to grow to maturity before you buy the piglet. The thing is, the ground has to be prepared with peatmoss and manure prior to planting so the grasses don't dry out. Pigs love lush moist dairy whey and it's so cheap to do because the dairy industry plants so much of it.