丙酸和丙酸菌添加对高油玉米秸秆青贮发酵品质以及瘤胃发酵参数影响的研究  

Effects of Propionic Acid and Propionic Acid Bacteria on the Fermentation and in Vitro Digestibility of High Oil Corn Stover Silage

作　　者：董晓玲[1] 孟庆翔[1] 

机构地区：[1]动物营养学国家重点实验室,中国农业大学动物科技学院,肉牛研究中心,北京100094

出　　处：《中国畜牧杂志》2007年第15期35-38,共4页Chinese Journal of Animal Science

基　　金：国家自然科学基金(30270944);国家杰出青年基金(30125033)

摘　　要：试验以完熟期的高油玉米秸秆为青贮原料,分别为对照组(无添加剂)、丙酸处理组(0.5%/kg鲜样)、丙酸菌处理组(105cfu/g鲜样)。在青贮的第1、3、6、9周开瓶取样检测丙酸和丙酸菌对青贮发酵质量的影响。结果表明:3种处理均得到优质青贮(低pH、高乳酸含量、未检测到丁酸)。活体外试验表明,丙酸处理青贮的72h累积产气量和总挥发性脂肪酸(VFA)产量均显著高于丙酸菌处理和自然发酵青贮(对照组)。但是3种处理青贮的活体外消化率没有显著(P>0.05)差异。Experiment was conducted to determine the effects of propionic acid and propionic acid bacteria as silage additives on HOC stover silage quality and in vitro fermentation characteristics. Results showed that the three silages were all well preserved. No significant difference（P = 0.09） in rumen DM digestibility （IVRDMD） in vitro was observed among treatments. However, BPA had a significant （/9 〈 0.0001） effect on the dynamics of gas production and VFA production.

关 键 词：青贮 丙酸 丙酸菌 产气量 高油玉米 

分 类 号：S827.5[农业科学—畜牧学]