Modulation of Corn Straw Using Microbial Inoculants and Enzyme Preparation

Corn straw was modulated in bag minisilos at 25 ℃ in greenhouse to evaluate the effects of methyl acid, multiple lactobacillus, cellulose enzyme, solid modulation preparation (multiple lactobacillus + enzyme preparation) and liquid modulation preparation (efficient microorganism) on the fermentation, composition and ruminal degradation when they were applied along or combined. Results indicated that the pH, composition and ruminal degradation of corn straw in groups treated with cellulose and multiple lactobacillus were not significant compared with control group, but the concentration of lactic acid was higher than that of control group (P 0.05), and the content of DM and CP of corn straw with different treatments was not significant compared with that of control group. The pH, concentrations of NH_3-N and butyric acid of corn straw in groups treated with solid modulation preparation and liquid modulation preparation was reduced ( P < 0.05) compared with that of the control group, and the concentrations of lactic acid was increased (P < 0.01). The treatment of corn straw with solid modulation preparation and liquid modulation preparation increased the quick degradable DM and NDF fractions significantly (P < 0.01).