Effects of different microbial fermentation agents on the nutrient composition,sensory evaluation,and fermentation quality of silage corn
This experiment aims to investigate the effects of different microbial fermentation agents on the nutritional composition,sensory evaluation,and fermentation quality of silage corn.The experiment was divided into 5 groups,with the blank group added with water,and the remaining 4 groups treated with silage corn using silage preservation,silage bacterial agents,silage EM bacteria,and straw fermentation agents(product abbreviation).After the fermentation of silage is completed,3 small samples of each group of silage corn are collected for testing.The results showed that:1)Compared with the blank group,the dry matter and crude fat content of different microbial starter groups were significantly increased(P＜0.05);Compared with the blank group,the crude protein and ash content in the silage preservation group and silage bacterial agent group were significantly increased(P＜0.05).2)In terms of sensory evaluation,the silage EM bacteria and straw fermentation agent group were the best,followed by the silage preservation group and silage bacterial group,and the blank group was the worst.3)Compared with the blank group,the ammonia nitrogen and acetic acid content of different microbial starter groups were significantly reduced(P＜0.05),and the lactic acid content was significantly increased(P＜0.05),effectively improving the fermentation quality of silage corn;Compared with the blank group,the pH value of the silage EM bacteria and straw fermentation agent group significantly decreased(P＜0.05);Although the pH values of the silage preservation group and the silage bacterial agent group were lower than those of the blank group,the difference was not significant(P＞0.05);The ammonia nitrogen content in the silage EM bacteria and straw fermentation agent group of silage was significantly lower than that in the silage preservation and silage bacterial agents group(P＜0.05).Conclusion:Different microbial fermentation agents can improve the nutritional composition,sensory evaluation,and fermentation quality of silage corn.Among them,using silage preservation and silage bacterial agents as fermentation agents,silage corn has the best nutritional composition;The sensory evaluation and fermentation quality of silage corn are the best using silage EM bacteria and straw fermentation agents as fermentation agents.
万方数据
维普
