so i can grow kale or cabbage etc and that should be sufficient
You are in Florida, thanks for providing that information. You have all kinds of options on what to grow. I can't remember what these are called on this forum, maybe grazing beds? Basically you build a frame several inches high and cover it with wire mesh. The mesh needs to be small enough they cannot get their heads through and small enough that they cannot get their heads stuck. You don't want them pulling up the plants. Or make it so tall with larger openings they can't reach in far enough to pull the plants. There are some logistics to figure out.
Kale and cabbage are somewhat seasonal plus the leaves are so large they can't grow through a small mesh wire. If I were doing it I'd probably plant a hay mixture of seeds that grows in your area. Some grasses but also some broadleaf plants like alfalfa, lespedeza, or clover. Your county extension agent should be able to give you suggestions to which ones or which varieties of grass and other hay plants grow in your area.