Zinc carbonate is suitable for adding zinc to various kinds of feed of poultry, livestock and fishery2. Zinc carbonate is a dry powdery zinc source, which is stable, water-free, caking-free and invariable in feed. It is convenient for feed processing and long-term storage, and has little effect on vitamins in feed. As a zinc source, zinc carbonate is more easily absorbed by animals than other zinc sources. It is a feed additive, low cost compared with other zinc sources, the cost per unit of zinc carbonate is significantly lower, which is beneficial to reduce the cost of feed.