PURPOSE: The titled feed, containing a sodium compound and food fermentation by-product in respective specific proportions and capable of improving palatability of a feed containing an added sodium compound, e.g. sodium hydrogencarbonate, etc., having buffering action on the gastric pH of ruminants.

CONSTITUTION: A feed containing (A) 40W90% sodium compound, e.g. sodium carbonate, sodium monohydrogenphosphate, sodium dihydrogenphosphate, etc., and (B) 1W25% food fermentation by-product, preferably fermentation residue of pickles, vegetable pickled in SAKE (Japanese rice wine) lees, etc., e.g. lees of NARAZUKE (pickles seasoned in SAKE lees), SAKE lees, lees of SHOCHU (low-class distilled spirit), soy sauce lees, beer lees, etc.