Propionate is an important feed preservative. Propionic acid is a colorless liquid with volatility. Propionate mainly refers to calcium propionate, sodium propionate, Zinc Propionate, potassium propionate, Ammonium Propionate, etc., mostly white particles or powder, odorless or slightly different odor, soluble in water. Compared with other preservatives, propionic acid and its salts have many incomparable advantages, so they have become one of the most widely used preservatives in feed.