It is propo sed that the requirement of grass carp fingerling for vitamin K3 is about 1.9 m g/kg diet.

• 对饲料中维生素K3含量和草鱼凝血时间进行折线回归分析表明:草鱼幼鱼饲料中维生素K3适宜的含量为1.；9mg/kg。