无机盐添加剂对窖贮紫花苜蓿品质的影响

Effect of Siloguard additives on the quality of Medicago sativa silages in silage silo

以第2茬紫花苜蓿(Medicago sativa)为原料,采用窖贮的方式,用青贮卫士(Siloguard)添加剂进行处理,设4个质量分数0、0.05%、0.1%和0.2%,探讨紫花苜蓿窖贮的可行性及添加剂的最佳质量分数,为大规模生产实践提供科学依据。试验结果表明:Siloguard添加剂对改善青贮料的感官、降低pH值、提高乳酸含量均有作用,但由于所加入添加剂的质量分数不同,窖贮后效果不一,以添加0.1%Siloguard效果最佳;加入添加剂后,青贮料的可溶性糖(WSC)含量显著提高,显著改善了紫花苜蓿青贮料的品质。综合分析认为,青贮窖越深,青贮料发酵品质越好;窖贮添加Siloguard能改善青贮饲料的品质,推荐生产最佳添加质量分数为0.1%。

The experimental site was located in Dahe Experiment Station of Hebei Academy of Agriculture and Forestry Sciences.There were four kinds of treatments,using second crop Medicago sativa as experimental material and Siloguard as additives in silage silo.The experiment was done to study the effect of additives（Siloguard） on the fermentation quality of M.sativa in silage silo,and to confirm the optimum concentration of additives and feasibility of M.sativa storage in silage silo,as well as provided scientific basis for large-scale practice.The conclusion showed that： there were effects of additives on sense of silage,lowering pH,increasing lactic acid content,increasing protein content,and reducing the contents of various fibre.However,different additive concentrations could also lead to different results of the storage.While,the optimum result was saw when the concentration of Siloguard was 0.1%.The WSC content of silage increased notablely after adding additives,and the quality of the silage was improved remarkably.The comprehensive analysis suggested that stored in silage silo and Siloguard additives were able to improve the quality of the silage,and 0.1% was recommended to the production.