混合菌的添加对青贮饲料发酵品质及消化率的影响

新疆的牧业发展依赖于天然草原，但草原退化严峻，冬季漫长，饲料资源短缺等因素制约着畜牧业的持续发展。在农业区，有丰富的农作物秸秆资源，因短缺有效的饲料生产技术极少数秸秆用做饲料，绝大部分被焚烧。为充分利用秸秆资源本研究室新疆不同饲料中筛选出高效乳酸菌。乳酸菌添加实验得知,乳酸菌产生乳酸从而降低pH,使抑制有害微生物改善饲料品质初步解决了传统法的营养物质少，发霉率高，保藏时间短等问题。但无法提高饲料消化率。因乳酸菌不能降解饲料中的粗纤维。促进纤维素降解是提高消化率的关键性技术。为促进纤维素降解从牛，绵羊胃液中筛选出纤维素分解菌。添加实验表明,纤维素大幅度下降并提高消化率，但pH无法下降饲料变成劣等饲料。本项目用的两种菌株混合培养时未发现相互抑制作用。将拌入青贮可降解纤维素，降低pH，提高消化率。如果本项目获资助对充分利用秸秆，降低成本，促进畜牧业发展，提高农牧民增收都有现实意义和深远的战略意义

Animal husbandry Xinjiang's development is dependent on natural grassland, grassland degradation but severe, long winter, a shortage of feed resources and other factors restricting the sustainable development of animal husbandry. In agricultural areas, is rich in straw resources, due to shortage of efficient feed production technology handful of straw used as animal feed, most were burned. To take full advantage of different feeds efficiently screened lactobacillus straw resources in our laboratory Xinjiang. Adding the experiment that lactic acid bacteria, lactic acid bacteria produce lactic acid to reduce the pH, so that suppression of harmful microorganisms to improve feed quality has initially solved the traditional method less nutrients, moldy rate, preservation time is short and so on. But can not improve feed digestibility. Due to the degradation of lactic acid bacteria can not feed crude fiber. Promote the degradation of cellulose to improve digestibility of key technologies. In order to promote the degradation of cellulose from cattle, sheep gastric screened cellulolytic bacteria. Add experiments showed a significant decline and improve digestibility of cellulose, but can not be lowered pH feed into inferior feed. Both strains used in this project did not find each other when mixed culture of inhibition. The mix silage can degrade cellulose, lower pH, improve digestibility. If the project is eligible for funding for full use of straw, reduce costs and promote the development of animal husbandry, improve herdsmen have practical significance and far-reaching strategic significance.