You are making the mistake of assuming that just by growing livestock-grade soybeans you magically have milk. You still have to make this animal drink about 3 g

You are making the mistake of assuming that just by growing livestock-grade soybeans you magically have milk. You still have to make this animal drink about 3 gallons per 100pounds, per day. https://beef.unl.edu/water-requirements-for-beef-cattle https://beef.unl.edu/water-requirements-for-beef-cattle