Effect of different additives on the quality of oat silage in Hulunbuir area

To explore the effects of different types of additives on the quality of oat silage in the Hulunbuir area, lactic acid bacteria and cellulase additives were added to oat silage to analyze and determine the fermentation quality and chemical composition of oat silage after 60 days of fermentation. The results showed that the lactic acid content in oat silage treated with lactic acid bacteria additive was the highest (6.78%) and was significantly higher than that of the control group (P < 0.05). The contents of crude protein (CP, 12.81%) and water-soluble carbohydrate (WSC, 4.19%) in the group treated with lactic acid bacteria additive were also the highest and were significantly higher than those in the control treatment (P < 0.05). In addition, lactic acid bacteria additive treatment effectively reduced the content of neutral detergent fiber (NDF), acid detergent fiber (ADF), and lignin (ADL) in silage. The pH, acetic acid, propionic acid, and ammonia nitrogen in the groups subjected to lactic acid bacteria additive and cellulase additive treatments were significantly lower than those in the control (P < 0.05). The number of lactic acid bacteria in the lactic acid bacteria, cellulase, and lactic acid bacteria + cellulase treatments was significantly higher than that in the control treatment (P < 0.05). In conclusion, these results indicate that the best additive to improve the silage quality of oat silage in the Hulunbuir area is the lactic acid bacteria additive.