Like people, if they're too close together, they might get agitated. They need room to grow. What's the amount of space that's good for them? It adds stress if they're too close together. 'We try to give them a lot of space,' Marie said during a tour of the pig barn. The farmers also show concern for the mental health of the animals.

Berkshire pigs, with their darker skin, do not suffer from the same sun issues as pink- and light-skinned animals, they noted. They have access to a large paddock every day, and in the pastures they can roam freely, with plenty of fresh air and sunshine. They've developed movable fencing so they can move both pigs and cattle from one pasture to another, which not only is good for the land, but also provides variety for the animals.

They also work to preserve topsoil and plant a variety of trees and natural wildlife. Their pastures are certified organic, meaning they use only organic seed and never use pesticides, or chemical weed control or fertilizer. If someone brings their own equipment to work the fields, it must be cleaned.

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