A recent paper entitled “The Effect of Adding Green Tea By-products on the Productivity of Broilers and Laying Chickens†recently published by Yang Zhetang, professor of animal nature at SunTong University, South Korea, believes that feeding chickens with green tea by-products as an additive can not only improve chicken disease resistance. Ability to increase egg production. The professor conducted relevant experiments at a school-affiliated farm. He added tea leaves that had been discarded after making green tea beverages (added 0.5%). The results showed that after 6 weeks, the average weight of the chicken was lower than 3% of the chicken fed with the common feed, but the mortality of the chicken fed with the common feed reached 21.4%, but the chicken fed with the green tea by-product feed did not have one. Only died. At the same time, chickens fed with green tea by-products had lower cholesterol levels than other chickens, and the egg production rate was 90.4%, which was significantly higher than that of other chickens. The professor believes that using chicken by-products made from green tea by-products is worth promoting to chicken farmers.