The supplementation of FOS and MOS, associated with vitamins and amino acids in bird seed’s mixtures, helps to reduce nutritional losses associated with factors such as: Harvest and storage process; Seed processing; Presence of anti-nutritive factors. On the other hand, the prebiotics (FOS and MOS), stand out more and more as one of the main alternatives to antibiotics, to promote the correct development of birds, through the synergistic effect in the microflora.