When Ben Olson wanted to expand his family’s cattle herd on their farm near Vinton, he wanted to do it in a way that would not only enhance cattle care and comfort, but would also help protect the soil and water close to his farm.

Olson, the fourth generation in his family to farm, had existing open lots where he and his dad raised cattle. But they were looking for a way to grow without having to add more open lots or increase labor. More lots...