63日龄白耳公鸡70只随机分成三组,分别饲喂含硒0.095、0.345和0.793ppn 的日粮。

• Seventy male white Ear Chickens,63 days of age,were randomly alloca-ted to receive diet containing 0.095,0.345 and 0.795 ppm selenium respectiv-ely.