| 摘要 |
A process for production of a composition for animal feed, which comprises spray drying a solution containing 5-95 wt. % based on the solids content of a solution of tryptophan or threonine, or a concentrate thereof, to make sprayed granules in a semi-dry state, depositing said spray granules in a mat form, and hot air drying said granules to produce granules having a water content of about 4 wt. % or less. |
