I had a cooked paleolithic meal of plain fatty lechon pork at Engrande restaurant and got to talk with the owner. They grown their own pigs which are fattened for the purpose of making roast pig – lechon. He knows a couple of good things how to cheaply fatten his pigs for that great lechon taste.
He admits there is a pig epidemic that hits at the mother pigs. They give birth to weak piglets. Many pigs are slaughtered today at young ages as economic insurance for the pig farmers.  He asked for my thoughts on this matter as I was discussing that I was a hobby healer.
I said that there are a couple of things working against pigs these days from the point of view of foods. Most pig feed is made from corn. The corn in the feeds lately is genetically modified. Farmers are given great financial incentives to grow genetically modified corn. This is GM corn being fed to the pigs today. This is one reason they are sick.
The other reason could be the wheat epidemic sweeping the world wheat plantations. The fungus eating up wheat is still part of the harvested wheat and the overall quality of the wheat is in question.
With the foods of the pigs being stored foods: corn, rice, it is quite possible that you may have to find a way to clean up your feeds so the fungi and their aflatoxins are not fed to the pigs. With GM corn, you may as well do an industry boycott of GM corn.
Of course the pigs need some fresh air, sunlight, roaming in the grass. Don’t keep them holed up in your roofed housing their whole lives.