And 50 healthy chickens of 10-day-old were divided into 5 groups randomly. The test groups were treated with different concentration of Diphenoxylate of 0.1,0.2,0.4,0.8 mg/kg. The excrement propellant rates of Chinese ink were recorded.

• 同时将50只10日龄健康雏鸡随机分为5组；1组为空白对照组；2-5组为试验组分别给予0.；1、 0