Abstract: Three rumen-cannulated sheep were used to measure ruminal degradation, using the nylon bags method for different ratio of tomato sauce residue and alfalfa, cotton shell particles made of grass in the rumen degradation rare of 2,6,12,24,36 and 72 h,which studied to determine the tomato sauce residue and alfalfa, cotton grass system shell particles suitable ratio, mixed grass particle dynamics of nutrients in the degradation rate. The results showed that tomato sauce residue∶alfalfa∶cotton shell was 60∶35∶5,which was the highest combination of effects.Degradation rate of the group:dp(DM)= 27+40.9×(1-e^-0.0139t)(n=6,R²=0.978);dp(CP)=31.9+32.6×(1-e^-0.071t)(n=6,R²=0.986) ;dp(NDF)=14.3+56.1×(1-e^-0.023t)(n=6,R²=0.994).

Key words: tomato sauce residue; alfalfa; rumen; degradation rate