添加剂对柠条青贮影响的研究

The effect of different additives on Caragana korshinskii silage

为探讨不同添加剂对柠条(Caragana korshinskii)青贮的影响,以开花期柠条为原料,分别设计对照、添加甲酸(6 mL/kg)或蔗糖(2%)处理,袋装密封青贮360 d后取样分析。结果表明,添加蔗糖和甲酸能改善柠条青贮饲料的发酵品质。添加蔗糖显著降低青贮饲料的pH值(P<0.05),极显著增加乳酸含量和降低氨态氮含量(P<0.01)。添加甲酸极显著增加柠条青贮饲料的乳酸含量,降低氨态氮含量(P<0.01)。添加甲酸或蔗糖显著提高柠条青贮饲料的干物质保存率(P<0.05)。青贮之后,硝酸盐含量下降。说明柠条青贮时添加蔗糖或甲酸,可以获得发酵品质良好的青贮饲料。

The effects of additives on Caragana korshinskii silage were studied.The plants of C.korshinskii during flowering stage were harvested and ensilaged with 3 treatments： 1） CK,2） adding formic acid（6 mL/kg） and 3） sucrose（2%）,then bagged in seal bags for 360 d.The results of this study showed that the silage fermentation quality was improved with the additives of formic acid and sucrose respectively.The pH of C.korshinskii silage were decreased significantly with adding sucrose（P0.05）,lactic acid content increased significantly（P0.01） and ammonia nitrogen content decreased significantly（P0.01）.The lactic acid content increased significantly（P0.01） and ammonia nitrogen content decreased significantly（P0.01） with adding formic acid.The dry matter recovery of the silage increased with addition of formic acid and sucrose（P0.05） respectively.The nitrate content reduced after ensilaged.