Results showed that the bacterial densities of TVB and LAB were significantly different among the treatment groups at the ensiling period of week 1 until week 3. The concentration of fermentation acids demonstrated high level of lactic acid and low level of butyric acid in the 2 cm cutting length of corn silage. The in vitro gas production and the DM, OM, and CP disappearance percentage of short cutting length were significantly higher than ling cutting lengths. The results of aerobic stability measurements showed that the changes in microbial populations observed during exposure to air, but no significant result was observed among the cutting lengths of whole-crop corn silage. The concentration of fermentative acids and chemical composition of all cutting length were reduced throughout the period of aerobic exposure.
