An inorganic compound that is commonly used in animal feed as a zinc source. Zinc oxide has been used as a supplement to prevent and reduce the incidence of postweaning diarrheaA multifactorial enteric disease that affects pigs within two weeks of weaning. This disease is comm..., in addition to meeting the nutritional requirements for zinc. However, studies have shown that excessive use of zinc oxide has a negative impact on the environment. The European Commission decided in June 2017 to ban the use of high doses of zinc oxide (3000 mg/kg) beginning in 2022.