How essential oil and organic acid can affect this parasite in broilers

Dear Frances, Which type of parasites it will affect? And how we use essential oil and organic acid? Are these used in feed but the level of oil in feed cannot exceed how we manage this? More oil affect the durability of pellet binding? What ever method u use what are affect on production? Can u show or share some results deeply explain it? Best regard, Suleman Arshad Student of Poultry Science