Alfalfa hay have more RDP and less RUP, DDGS have more RUP and less RDP, ideal ratio of RDP to RUP in diet of high producing dairy cow can be attained when using alfalfa with DDGS.

• 苜蓿干草属于高RDP 饲料,DDGS 属于高RUP 饲料,用一定比例的苜蓿干草和DDGS 配合可以使高产奶牛日粮的RDP-RUP比例达到日粮设计的理想要求。