The production, product qualities, and the possibility of using an expanded structurized feed for different productive animals are described. This type of feed is produced by expander without a pelleting press. The granulate which is produced can considerably increase the value of meal feed and it can, in many cases, replace pelleted feed. Thermal treatment by expander improves the physical product qualities such as flow behaviour, structure, and absence of dust. At the same time such important ingredients as starch, crude protein, fat, and crude fibre are improved with regard to their utilization by the animal. Heat-treated granulate is free from pathogenic germs and mould fungi. The structure of the expanded feed can be changed during production and can be adapted to the respective animal and to the growth of the animals. This satisfies the demands for a feed structure which corresponds to the needs of the animal, is friendly to the environment and ensures the best possible utilization of the genetic performance.