High dosage of ZnO and coated ZnO
High dosage of zinc oxide (ZnO) in piglet feed has been widely used to control post weaning diarrhoea (PWD). In the modern pig industry, weaning generally occurs 21-28 days after birth. The administration of high dosage of ZnO usually lasts about 14 days, starting immediately after weaning. ZnO inclusion in piglets diets should reach an