Evaluation of silage added using additives by milk production, intake and nutritive value

如申请书中的研究计划所述，我们在2001年汇编了1999年和2000年进行的me研究和me基础研究计划(C)(2)（1997、1998）支持的“用于生产优质青贮饲料的添加剂及其作用机制”项目的苍蝇结果。为了获得高质量的发酵青贮饲料，必须抑制丁酸发酵。原料草的生长阶段、收获时间和预干燥程度影响发酵品质的稳定性。这些因素影响了原料草中水溶性碳水化合物（WSC）的含量，并决定了发酵品质。青贮饲料发酵品质对贮藏稳定性、羊采食量和营养水平有显著影响。通过添加甲酸、乳酸菌制剂和酶提高青贮草的发酵品质，可提高营养水平（TDN和DE含量）和营养物质摄入量（TDN、DE）。添加剂对玉米青贮发酵品质影响不大。添加剂增加了玉米青贮干物质采食量、TDN和DE含量，增加了营养物质（TDN、DE）的采食量。添加乳杆菌制剂可提高部分奶牛的泌乳量和日增重或乳成分的产奶量。综上所述，青贮饲料的高发酵品质增加了精料的采食量，有助于提高自供粗料的利用率，从而节约精料。最重要的一点是材料草的条件；特别是，适当使用添加剂，考虑到WSC的含量。然而，虽然添加剂在发酵质量和营养物质摄入量方面取得了较好的效果，但并不能有效抑制开仓后的好氧变质。

As described in the study scheme in the appUcation form, we compiled in 2001 flie results of me studies performed in 1999 and 2000 and of the project "Use of additives for the production of silage of high quality and the action mechanism"supported by me basic study program (C)(2)(1997, 1998).To obtain high quaUty fermented silage, butyric acid fermentation must be inhibited. The growth stage, time of the harvest, and degree of predrying of me material grass are involved in the stability of the fermentation quality. These fictars affibcted me content of water-soluble carbohydrate (WSC)in the material grass, and determined me fermentation quality.The fermentation quality of silage markedly affected the stability of preservation, intake by sheep and nutrition level. When the fermentation quality of grass silage was improved by adding formic acid, Lactobacfflus preparations and enzymes, the nutrition level (contents of TDN ard DE) and intake of nutrients (TDN, DE) increased. The fermentation quality of corn silage was not aflected by additives. However, the dry matter intake of corn silage and contents of TDN and DE were inoieased by additives, and the intake of nutrients (TDN, DE) was also increased. The secretion of milk and daily increase of the body weight or me amount of milk components was increased in some dairy cattle by adding Lactobacillus preparations.These findings indicated that a high fermeotatirai quality of silage increases the intake of concentraed contributes to increases in the use of self-supplying roughage, resulting in saving of concentrated feed. The most important point is me condition of the material grass ; in particular, appropiate use of additives, taking the content of WSC into consideratioan. However, although good results of me fomentation quality and intake of nutrients were obtained by additives, it did not effectively suppress aerobic deterioration after opening of the silos.