Effects of applying lactic acid bacteria to the fermentation on a mixture of corn steep liquor and air-dried rice straw.

This study was to determine the fermentation quality of a mixture of corn steep liquor (CSL) (178 g/kg wet basis) and air-dried rice straw (356 g/kg wet basis) after being treated with inoculants of different types of lactic acid bacteria (LAB). The treatments included the addition of no LAB additive (control), which was deionized water; homo-fermentative LAB alone (LAB), which was alone), and a mixture of homo-fermentative and hetero-fermentative LAB (LAB), which were , , and . The results showed that the inoculation of the mixture of CSL and air-dried rice straw with LAB significantly increased the concentration of acetic acid and lactic acid compared with the control ( < 0.05). The addition of LAB effectively inhibited the growth of yeast in the silage. The concentration of total lactic acid bacteria in the LAB-treated silage was significant higher than those obtained in other groups ( < 0.05). The duration of the aerobic stability of the silages increased from 56 h to >372 h. The control group was the first to spoil, whereas the silage treated with LAB remained stable throughout the 372 h period of monitoring. The results demonstrated that the LAB could effectively improve the fermentation quality and aerobic stability of the silage.