Our batch of soy-free birds isn't going well. They are suffering from leg weakness at a far greater percentage than any of our other batches, and they are extremely small for their age. It seems to me that the balance of nutrients simply isn't sufficient for decent growth of cornish cross. It may work very well for other breeds and other purposes, but it isn't working for our meaties. Unfortunately, it means that we are disappointing 15-20 customers who had ordered this batch. We have decided that for the health of the bird and our profit margin (which right now is in the negative with this batch), that we have to put them back on our regular organic feed that has soy in it. Have others had much success with soy-free cornish cross? We are looking into alternatives for soy that we may be able to use in the future (worms and duckweed), but we aren't yet to the point of having a working feed mixture.