Zinc fumarate, an organic zinc feed additive formed by the combination of fumaric acid (H₂C₄H₂O) and zinc ions, is a bioactive substance. Adding it to feed provides anti-mold and antibacterial effects, improves feed utilization, and enhances livestock and poultry production performance. It is also non-irritating and rapidly absorbed, making it a high-performance animal zinc fortifier. The fumarate ions in zinc fumarate can participate in the tricarboxylic acid cycle, forming ATP for the body's metabolic needs, serving as a carbon skeleton for amino acid synthesis, and further synthesizing proteins.