Bought a few round bales of hay to feed a group of calves. It's got a good bit of horsenettle in it. Is this going to be an issue or will they pick around it? How much is toxic to cattle?
They'll pick around it, Is it first cutting or second? I would worry more if the berries are intact, usually indicates later cutting. A good way to get it established in your fields, and cost you money on herbicide, if the berries aren't there, don't worry about it. You'll lose some feed efficiency while they sort through it but it won't hurt em.