苜蓿与玉米秸秆混贮研究  

A study on mixed silage of alfalfa and maize straw

作　　者：孙小龙[1] 周禾[2] 李平[2] 玉柱[2] 

机构地区：[1]内蒙古生态与农业气象中心,内蒙古呼和浩特010051 [2]中国农业大学草地研究所,北京100193

出　　处：《草业学报》2009年第5期86-92,共7页Acta Prataculturae Sinica

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)资助

摘　　要：以二茬苜蓿和玉米秸秆为原料,研究乳酸菌制剂、纤维素分解酶制剂、绿汁发酵液、乳酸菌制剂和纤维素分解酶及绿汁发酵液和纤维素分解酶的复合添加对苜蓿与玉米秸秆混合青贮品质的影响。结果表明,苜蓿与玉米秸混贮可以提高青贮保存性能;苜蓿与玉米秸各混贮比例处理均获得良好效果;在苜蓿、玉米秸混贮中使用添加剂可以进一步提高青贮品质;各处理均显著降低了丁酸含量(P<0.05),同时pH值均小于或接近于4.2,与对照组相比差异显著(P<0.05);乳酸菌制剂+纤维素分解酶处理组效果最好,在3个混贮组中,该处理的V-Score青贮质量评价均得到了良好的等级;添加纤维素分解酶使NDF含量显著下降,平均下降了3.77%(P<0.05);7∶3混贮组中添加纤维素酶制剂显著提高了青贮饲料的CP含量(P<0.05),提高了6.0%。Maize straw and second cut alfalfa was completely mixed and treated with lactobacillus（LAB）, cell wall degrading enzymes （ENZ）, previous fermentation juice （PFJ）, LAB and ENZ, PFJ and ENZ. Mixed ensiling maize straw and alfalfa improved the preservation of silage; all the different mixed ratio silages had a high fermentation quality; all the additives improved the fermentation quality further; there was little butyric acid in any of the silages. All the pH values were less than, or close to, 4.2. The ENZ＋LAB treatment was the best, and its V-Score was also the best of the treatments. The ENZ treatment significantly （P〈0.05） reduced NDF content by 3.77% and CP content （P〈0.05） by 6.0% in the 7 ： 3 mixed ration.

关 键 词：混贮 添加剂 发酵品质 营养组分 

分 类 号：S816.33[农业科学—饲料科学]