The invention relates to a method for producing digestible keratinaceous material comprising the steps of hydrolysing keratinaceous material in the presence of water in a hydrolyser at elevated temperature and at a pressure between about 2 bar and about 15 bar, and drying the resultant hydrolysed keratinaceous material comprising at least partly insoluble material in a dryer at a temperature/time/pressure combination which limits the drop in pepsin and/or ileal digestibility by less than 10%, and/or such that the pepsin and/or ileal digestibility remains higher than 85%, or such that the pepsin and ileal digestibility remains higher than respectively 75% and 85%. Preferably, the drying of the resultant hydrolysed partly soluble keratinaceous material is performed in a dryer at a temperature such that the keratinaceous material remains at a temperature below 90° C., preferably below 80° C.<；p>；Mé；todo para producir un material queratinoso digerible, que comprende las etapas de hidrolizar el material queratinoso en presencia de agua, en un hidrolizador con vapor y a una presió；n que oscila entre 2 y 15 bar y secar el material queratinoso hidrolizado que comprende un material al menos parcialmente insoluble en un secador en combinació；n de temperatura/tiempo/presió；n que limita la disminució；n de la digestibilidad de pepsina y/o ileal a menos del 10%, y/o de modo tal que la digestibilidad de pepsina y/o ileal sigue siendo superior al 85%, o que limita la disminució；n de la digestibilidad de pepsina y/o ileal a menos del 10% donde la digestibilidad de pepsina y/o ileal sigue siendo superior al 75% y 85% respectivamente.<；/p>；
