关键词: 绿狐尾藻, 混合青贮, 水稻秸秆, 葡萄糖, 发酵特性, 营养成分, 有氧稳定性

Abstract: Our study investigated the effect of adding different proportions of rice straw,wheat bran,and glucose on the silage quality of Myriophyllum elatinoides. Treatments were arranged in the two factors completely random design. A factor is the addition proportion of rice straw:0%,5%,10%,15% (calculate the addition ratio of wheat bran and M. elatinoides;B factor is the addition ratio of glucose:0,2%,4%,6%. Addition of rice straw or glucose affect the fermentation characteristics and nutrition composition and there was an interaction between the addition of different proportions of rice straw and glucose (P<0.05 or P<0.01). With the increase in the proportion of rice straw,the concentrations of butyric acid and fiber increased significantly in mixed silage(P<0.05 or P<0.01),and the content of crude protein decreased very significantly (P<0.01). With the increase of glucose, pH decreased significantly (P<0.05) in mixed silage, water-soluble carbohydrates content increased very significantly (P<0.01), while crude protein content, fiber content and aerobic stability decreased very significantly (P<0.01) in mixed silage. In conclusion,the mixed silage with 70% M. elatinoides,30% wheat bran,and 2%~6% glucose can be used to prepare high-quality silage. Addition of 5% or 10% rice straw and 4% glucose can produce silage with lower raw material cost.

Key words: Myriophyllum elatinoides, Mixed silage, Rice straw, Glucose, Fermentation characteristics, Nutrition composition, Aerobic stability