책임운영기관 농촌진흥청 국립축산과학원 (로고)

A significant reduction in pH was observed for both high moisture and low moisture silages produced with LAB in either individual or cocktail form compared to non-inoculum silage. On 6 month fermentation, the pH range of control and inoculum treated high moisture (HM) silage was 6.11 ± 0.03 to 4.02 ± 0.08, and low moisture silage was 6.05 ± 0.09 to 3.98 ± 0.52. The pH was reduced in a similar manner on month 12. Additionally, LAB significantly increased lactic acid (LA) content from 0.48 ± 0.19 to 6.58 ± 0.28 DM% in HM and 0.00 ± 0.00 to 4.34 ± 0.19 DM% in LM on month 6. Silage fermented for 12 months also retained its LA content. Despite this, inoculated silage had higher levels of LA than control silage. Butyric acid content was significantly lower in inoculum-treated silage than in non-treated silage. In both experimental silages, marginal levels of acetic acid (AA) were produced. High LAB and lower yeast & mold counts were found in inoculum treated silage compared to non-inoculum silage. A cocktail of LAB treatments significantly increased LA content in silages over non-inoculum or single LAB treatments. The correlation study revealed that lactic acid positively correlated with LAB and negatively interacted with yeast and mold.