Seven hundred qne-day-old Arbor Acres chicks, fed with maize soybean meal and fish meal after adding 0 , 5, 10, 20, 40, 160IU vitamin E, were divided into 6 treatmentsE 0 , E5, E10, E20, E40, El60.

• 700只Arbor Acres商品代出壳雏鸡,饲喂相同基础日粮,按维生素E添加量分为E0,E5,E10,E20,E40和E160(IU/千克)6个处理。 种母鸡6个处理与此相同。