Phytic acid is the main storage form of phosphorus in plants.Due to the lack of phytase in monogastric animal digestive tract, most of the phytic acid is unavailable, and directly excreted to manure.

• 植酸是植物体内磷的主要存在形式，其绝大部分不能被单胃动物消化吸收，而随粪便排出体外造成环境污染；