Abstract: The purposes were to determine the suitable density of native grass in silage.The effect of 4 different densities(200,250,300,400 kg/m3)on the quality of native grass silage in typical steppe of Xilinguole was studied.Sensory indicators,contents of nutrients and organic acid were determined.The results indicated when native grass density was 300 kg/m3,the sensory indicators,contents of crude protein,nitrogen-free extract,the total digestible nutrition(TDN)and organic acid content were higher than other densities,and 300 kg/m3 was beneficial to native grass fermentation.Therefore,the optimum density of native grass silage was 300 kg/m3.

Key words: Native mass, Density, Silage, Comprehensive evaluation

CLC Number: 

• S816.32