PROCEDURE FOR EXTRUDER COOKING OF ANIMAL FEED WITHOUT USING A DRYER

摘要

Procedure for production of dry feeds for animals without using a drier by adding 25% of a digestible starchy or another extrudable powdery "glue" to a continuous extruder cooker, where it is cooked at high pressure and temperature until sufficient gelatinization and thermo-plastic condition is achieved. The glue product is then carried through a vacuum zone, in which the sudden pressure drop causes evaporation and temperature drop, so that the moisture content in the glue product drops. After the vacuum zone 75% of an unheated primary feed mixture is added to the glue product, and the two products are mixed. After the mixing zone the finished product is carried through a die and cut to pellets by a rotating knife.