He shows how they have made their pig pen from cattle panels so that they can be moved around. This is good because it leaves the potty corner behind and gets the pigs to a new patch of ground that they will work.
Raising pigs without smell and on the cheap
The Backyard Homestead Guide to Raising Farm Animals: Choose the Best Breeds for Small-Space Farming, Produce Your Own Grass-Fed Meat, Gather Fresh … Rabbits, Goats, Sheep, Pigs, Cattle, & Bees
Raising Pastured Pigs: A Guide to Rearing, Butchering, and Preserving Pastured Pork (Biggers’ Guides to Homesteading)
The Complete Guide to Raising Pigs: Everything You Need to Know Explained Simply (Back-To-Basics Farming)