Study on the in vitro digestibility of baled alfalfa silage

The nutrient in vitro digestibility of baled alfalfa silage stored longtime was studied, which included twostage technique for IVDMD and IVCPD, and onestage technique for IVNDFD and IVADFD. The result indicated that the nutrient in vitro digestibility of direct cut baled alfalfa, except for IVCPD, and that of the wilted baled alfalfa silage decreased after ensilaged, there were not significant difference among IVDMD, IVCPD, IVNDFD,IVADFD of baled alfalfa silage with previous fermented juice or formic acid, the IVDMD and IVCPD of baled wilted alfalfa silage were significantly lower than that of direct cut alfalfa（P0.05）.It was concluded that the alfalfa nutrient digestibility decreased after ensilaged, and the wilt treatment decreased alfalfa's DM and CP digestibility.