This depends on the mixer model, capacity, and type and composition of the feed. Typically, a small feed mixer may take 15 – 30 minutes to mix a batch of feed, while a large, efficient mixer may be able to complete the mixing in 10 – 20 minutes. For example, for a simple grain feed mixture, mixing for about 15 minutes may be sufficient for homogenization; but if it contains a variety of additives and trace ingredients, it may take 25 minutes or even longer.