| abstract |
The invention relates to a process for producing a feed additive and feed from keratin-containing wastes, preferably from poultry feathers. …<??>According to the invention, the procedure is carried out in such a way that the keratin-containing waste - if required, after an enzymatic pretreatment and/or mixing with a surface-active substance - is treated at a temperature of 120-140 DEG C in the presence of a physiologically tolerated organic base in an amount of 0.001-5.0% by mass, preferably 0.01-0.5% by mass and in the presence or absence of an alkali metal salt of an aromatic organic acid and/or a physiologically tolerated, preferably sulphur-containing substance having reducing properties, if required dried and/or mixed with an antioxidant, ground and, if required, mixed with known feed components. …<??>The invention enables the processing of various keratin-containing wastes to form a feed additive or feed having a high content of digestible protein. |