Draft horses and oxen eat grass too. Since we were talking tractors I figured you meant animals to do both. Sadly, I really don't know how many grazers you nee

Draft horses and oxen eat grass too. Since we were talking tractors I figured you meant animals to do both. Sadly, I really don't know how many grazers you need to keep an acre of field from getting overgrown. Grass doesn't really grow during the winter though, so you'll need to have some way to feed them then. Also overfeeding is a concern. A buddy of mine has had a horse get obese from eating too much grass.