My sister lives in Texas and just bought a small homestead. She called about the ag exemption and was told she needed at least 3 cow/calf units. The person she spoke with wasn't very helpful about explanations. She plans on having one smallish dairy cow, but wants horses and a donkey too. Does anybody know what the equivalents are? Is there any provision for poultry? I'm talking a good sized breeding flock and possibly some meat birds, not 3 or 4 hens in the yard.