水稻秸秆、麦麸、葡萄糖添加对绿狐尾藻青贮质量影响研究

Effects of Rice Straw,Wheat Bran and Glucose Addition on the Silage Quality of Myriophyllum elatinoides

为探究添加不同比例的水稻秸秆、麦麸与葡萄糖对新鲜绿狐尾藻青贮品质的影响规律,采用双因素完全随机设计,A因素为稻秸添加比例:0%,5%,10%,15%(相应计算麦麸和绿狐尾藻添加比例);B因素为葡萄糖添加比例:0%,2%,4%,6%,青贮原料充分混合后青贮。结果表明:稻秸与葡萄糖添加比例及二者互作对青贮效果有显著或极显著影响(P<0.05或P<0.01)。随稻秸添加比例增加,丁酸含量显著增加(P<0.05),纤维含量极显著增加,粗蛋白含量极显著降低(P<0.01);随葡萄糖添加比例增加,pH值显著下降(P<0.05),可溶性糖含量极显著升高(P<0.01),粗蛋白、纤维含量及有氧稳定性极显著降低(P<0.01)。综合来看,70%绿狐尾藻与30%麦麸混合青贮添加2%~6%葡萄糖可制备饲用品质和有氧稳定性均优的青贮饲料;添加5%或10%水稻秸秆并添加4%葡萄糖可制备原料成本更低的青贮饲料。

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.