PURPOSE: To improve the palatability of rye to cattle, and to regenerate rye as an efficient feed, by spraying rye with salt water and acetic acid, blasting hot steam thereto, and pressing with a rolling mill.

CONSTITUTION: Selected rye is stirred and mixed in a mixer, sprayed with 0.2% solution of salt and then with 0.05% acetic acid to remove the bitter taste and astringent taste of the rye and to increase the permeability of moisture. Hot steam is blasted to the rye, and the rye is pressed with a rolling mill to improve the digestibility. Since the bitter taste and astringent taste are removed from the rye by this process, the palatability of rye to cattle can be improved, resulting in the improvement of the meat quality.