萎蔫和玉米粉混合处理对紫花苜蓿袋装式青贮品质的影响  

Effects of Wilting and Corn Flour on Alfalfa Bag Silage Quality

作　　者：玉柱[1] 李传友[2] 薛有生[2] 

机构地区：[1]中国农业大学草地研究所,北京100193 [2]北京市农机鉴定推广站,北京100029

出　　处：《中国草地学报》2009年第3期83-87,共5页Chinese Journal of Grassland

基　　金：公益性行业科研专项"人工草地优质牧草生产技术研究与示范"(nyhyzx07-022);国家科技支撑计划项目"牧草丰产技术集成与产业化示范"(2006BAD16B08);"奶牛优质饲草生产技术研究及开发"(2006BAD04-06-06)

摘　　要：以紫花苜蓿为原料,采用袋式灌装青贮方式,探讨了萎蔫和添加玉米粉处理对紫花苜蓿青贮品质的影响。结果表明:萎蔫处理1.5d后,待原料含水量由75.6%调节到60.7%进行袋式青贮,可显著提高乳酸含量,降低乙酸、丁酸、氨态氮含量,可明显改善紫花苜蓿发酵品质。在新鲜紫花苜蓿中添加不同浓度的玉米粉(5%、10%、15%、20%和25%),不但可明显改善紫花苜蓿青贮发酵品质,还可以提高青贮料的营养价值。其中以添加20%玉米粉的效果最好。The effects of wilting and corn flour on alfalfa silage with silage bags were studied. The re suhs showed that alfalfa was ensilaged after wilted for 1.5 days when water content in alfalfa was 75.6 % to 60.7% , the content of LA in silage significantly raised, and the contents of AA, BA and NH3-N significantly declined, which means that the fermentation quality of alfalfa were improved markedly. Mean- while, adding corn flour（5%, 10%,15%, 200/00 and 25%）improved not only the fermentation quality of al falfa, but also the nutritive value, the effect of adding 20% corn flour was the best.

关 键 词：苜蓿 青贮 萎蔫 玉米粉 袋式灌装青贮 青贮品质 

分 类 号：S816.53[农业科学—饲料科学]