VERFAHREN ZUR HERSTELLUNG EINES PROTEINFUTTER AUS EINEM KERATINHALTIGEN ROHMATERIAL

The invention relates to forage production and can be used by factories for processing animal product refused screenings. The inventive method for producing a food supplement from a keratin-containing raw material consists in heating, grinding, sterilising and drying an initial raw material whose moisture ranges from 35 to 95 %, in subsequently compacting and heating in a mixer-grinder channel with a continuous feeding at a pressure of 0.4-10.0 mPa and the raw material temperature ranging from 60 to 120 °C followed by a hydrothermal processing thereof with a temperature of 150-250 °C for 5-300 seconds associated with simultaneous fine grinding and abrasion. Afterwards, the thus processed raw material is transferred to an atmospheric pressure area. The inventive method makes it possible to simplify a production process, reduce costs and improve the quality of the protein supplement.