Hate to burst your bubble, but this has been proven to be false & I can attest to it as we have given away a lot of rejected produce we to local farmers to feed to their pigs that we were told by our shipping customers to dump. And also, what is it hat is shoveled from the soil of those pig pens that is spread on the fields prior to planting? I guarantee it isn't just plain old dirt. I literally live it therefore I know it so you can spread your propaganda elsewhere.
It’s not propaganda. Just because a human will not eat rejected food (and there are those that will) a REAL hog farmer will pick through the produce. They feed their hogs good food because they do not want to raise a hog that is sickly or have it come back on them. Not saying that some do feed crap but it is not what a real farmer does. Same for butchering the animals. A real farmer/rancher does not want to cause the animal much suffering when it is put down. An animal that is scared to death before it’s killed has enzymes(?) in the meat that makes it tough as all get out.
I guess we are talking about different things here. I am talking about farmers not commercial hog raisers but then again a commercial hog raiser pens his hogs on concrete which is washed into a vat sort of like a septic tank. But I have no problem with putting manure of any kind EXCEPT human on a garden but it HAS to be old manure. You can not put fresh manure on a garden. The urine in it will burn the plants whether it is chicken or hogs. It’s no different than composting veggies. It has to be composted.