Study On Technology Of Typical Steppe Native Grass Silage

The Inner Mongolia Steppe is the main part of north grassland in China, and is the material base of livestock husbandry in Inner Mongolia. In Inner Mongolia, livestock husbandry is the competitive and basic industries, it also is the main income resource of farmers and herdsmen. However, the development rate of stock raising has been slow down recent years.The contradictions between grassland and livestock became more severe, income of farmers and herdsmen on stock raising reduced quickly. Besides of the factors such as natural grassland degradation,number of licestock increasing and over-grazing,the traditional harvest modulation technique could not support modern grassland animal husbandry production, and this is the main problem needs to be solved.To explore the high rate of transform and using technology of natural grassland to fit the modern grassland animal husbandry production, the paper selected to the natural grassland in Xilinguole league as study object, focus on the silage efficiency of natural grassland, studied on the conditions of different way of processing the natural grass silage technology. Experiments of this paper could be divided into four steps.Step1:According to the main factors that influence the silage quality and its success, choose the key influencing factors of native grass such as moisture content, storage density and extraneous source additive, three levels and four factors was designed in this silage test. By comparing and analyzing these indexes such as sensory quality, major microorganism quantity composition, ferment quality(pH Value,Organic acid composition and content) and silage success ratio of the native grass silage in different levels, the technical parameters such as raw materials moisture content, storage density and additive usage amount that suit for native grass silage in experimental area were screened. Step2: Make the test that cut the grass into pieces for silage,study on the silage quality would be improved after grass being cut. Step3:Study on influence of storage time on grass and grass bounldes silage quality. Step4: The second fermentation trend of all the treatments after opening cellar for the first time was studied. According to the test mentioned above, comparing the fermentation quality by the two methods of ensilage, including long and short cutting, grass and grass boundles, so as to choose the optimum method and key condition for the silage of natural grass.The research results showed that: ①Ensilage the native grass when its moisture content was from 65%～70%, density was in the range of 350 ~ 400 kg/m3, the silage grass not only has better sensory quality, better fermentation, higher silage success ratio and better stability, but also can preserve the nutritional ingredients effectively and make the silage grass has higher feeding value.②The additive can effectively improved the native grass silage quality and stability. The digestible nutrient content was relatively high when the fungi amount was 0.50g/kg.③Cut the native grass into pieces for silage, the grass sensory quality, fermentation quality, nutrition components and stability haven't change significantly. The best use of time for native grass silage material was between 35-120 days after ensilaged.④The silage effect was better than grass silage after being baled.⑤It could effectively preserve the nutritional content, such as crude protein, crude fat and carotene by ensilaging natural grass. This mothod also decreased the fibers content, the digestive nutritional materials were also increased.