True, feral swine are a problem, and the problem is becoming bigger. However, farmers who pasture their pigs here in Michigan will use a hardier stock than the plain white pigs you normally see because the darker colored pigs winter better. From the Baker's Green Acres (Marion, MI) website regarding their hogs:
We’ve decided that our Mangalitsa and Mangalitsa hybrid pigs are important assets to our farm for many reasons. Not only do they produce really good food, they do it in an ecologically responsible manner. These “back to basics” hogs thrive in our northern Michigan climate and can grow on any kind of feed. They utilize grasses, roots, root crops, animal parts (heads, feet, heart/liver/gizzard from the chickens), and end-of-production garden plants to grow. They do not require oil dependant means (feed or shelter) to provide high quality food for many people. We’ve been impressed with their mothering skills and hardiness in a wide variety of conditions. “Hybrid vigor” is a term that aptly describes the productiveness of such animals. On top of all that, they are generally pleasant, cooperative animals, as pigs go. We’d hate to lose these and other heritage breeds of hogs in the local food community.
The problem is the Michigan DNR, in their efforts to reduce the feral swine problem, have thrown out the baby with the bathwater. Feral swine can be hunted year round with possession of any hunting license, including a small game license. If the problem persists, I would recommend the DNR just declare open season on feral swine and allow "shoot on sight." But to go invading small farms that pasture their hogs just smacks of big government doing the bidding of Big Ag.
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