苜蓿在反刍动物上的营养与免疫作用以及在生产中应用的研究进展  

Research progress on alfalfa's nutritional function, immune function and application in production of ruminants

作　　者：薛艳锋[1] 郝力壮 刘书杰[3] 

机构地区：[1]青海省高原放牧家畜营养与生态国家重点实验室培育基地青海省高原放牧家畜动物营养与饲料科学重点实验室,青海西宁810016 [2]青海高原牦牛研究中心,青海西宁810016 [3]青海大学畜牧兽医科学院,青海西宁810016

出　　处：《饲料与畜牧（新饲料）》2015年第9期25-28,共4页

摘　　要：苜蓿可以为反刍动物提供丰富的N-NH3、肽、氨基酸、支链脂肪酸等,改善瘤胃的发酵环境,提高消化率,进而提高能量的利用率。同时,苜蓿中含有丰富的多糖、黄酮等生物活性物质,可以提高动物机体免疫力,增强抵抗力,预防疾病的发生。青藏高原是枯草期漫长、冬季牧草极其匮乏的地区,苜蓿对减轻冬季肉牛掉膘的情况、提高奶牛的产奶量意义尤其深远。Alfalfa can provide abundant N-NH3, peptides, amino acids, branched-chain fatty acids for ruminants. Thus alfalfa is able to improve the fermentation environment of rumen, digestibility and energy utilization ration. Meanwhile, alfalfa contains affluent bio-activators such as polysaccharose and flavone, which are capable of improving body immunity and resistance, thereby prevent disease. Qing-Tibetan plateau has a long term withered period and lacks of grass extremely in winter. Therefore, in such an area, alfalfa has significance on reducing weight lose for beef cattle in winter and developing milk production for dairy cow especially.

关 键 词：苜蓿 反刍动物 消化率 生物活性物质 

分 类 号：S816.15[农业科学—饲料科学]