华北驼绒藜青贮饲料初步研究

Study on Making Eurotia arborescens Silage

本试验以华北驼绒藜为青贮原料，设置对照、添加Siloguard（0．1％）和，LaLsIL Dry（0．001％）以及华北驼绒藜和甜菜茎叶按照鲜样比（1：1）混合青贮4个处理，每个处理3次重复。常温下发酵90d开封取样，测定其发酵品质和化学成分。结果表明：华北驼绒藜直接青贮其乳酸含量较低，乙酸含量较高，且乙酸在总酸中占主导地位，表现出乙酸发酵类型，丁酸和氨态氮生成量较高，未能获得优质的青贮饲料。Siloguard（0．1％）和LaLsIL Dry（0．001％）处理组丁酸含量、氨态氮占总氮比例显著低于对照（P〈0．05），明显改善了华北驼绒藜青贮饲料的发酵品质；混合处理组中性洗涤纤维和酸性洗涤纤维含量显著低于对照（P〈0．05），粗蛋白显著高于对照（P〈0．05），同时具有较低的pH值和丁酸含量，乳酸生成量较大，说明混合青贮具有优良的发酵品质。

The material of silage was the eurotia arboresces, there were 4 treatments included control （CK）, LaLsIL Dry （0.001%）, Siloguard（0.1%） and mixed ensiling that eurotia arborescens and leafy stems of Beet at a proportion of 1：1 fresh weight, triplicate laboratory silos for each treatments, all treatments were stored at air temperature for 90 days then sampling for the analysis of fermentation and chemical composition of eurotia arborescens silages. The results indicated that eurotia arborescens directly ensiling had low lactic acid content and high acetic acid content, and the acetic acid dominated in total acid, the ensiling process may be acetic acid fermentation, as well as created lots of butyric acid and ammonia-N, so the fermentation quality was not well. By adding Sloguard （0.1%） and LaLslL Dry （0.001%）, the content of butyric acid and ammonia-N were lower than CK （P〈0.05）, which means that these two additives could improve the fermentation quality of the eurotia arborescens silage. Mixed silage decreased （P〈0.05）the contents of NDF and ADF （P〈0.05）, increased the content of CP, and had lower pH and butyric acid, it was concluded that mixed ensiling had well fermentation quality.