摘要
采用枯黄期骆驼刺、稻草及其二者不同比例混合料为青贮原料,通过鉴定感官指标,分析青贮料的pH值、CP、NDF、ADF、乙酸、丙酸、丁酸、乳酸及总酸的变化,研究骆驼刺与稻草不同比例混贮对青贮品质的影响。结果表明,骆驼刺虽然是豆科牧草,却容易成功青贮,青贮发酵以乳酸发酵为主(乳酸/总酸大于50%);骆驼刺与稻草混贮,能显著提高稻草青贮原料的可溶性碳水化合物含量(P<0.05),降低pH值和NH3-N/TN的百分比(P<0.01),提高混贮料中乳酸,丙酸(P<0.01)和总酸(P<0.05)含量,骆驼刺占混贮料的40%以上时就能显著降低青贮料中丁酸(P<0.05)的含量,改善稻草的青贮品质。
The effects of withered Alhagi sparsifolia and rice straw mix-ensiling on silage quality were studied.Silages of withered A.sparsifolia,rice straw and their mixture were sensorially evaluated and silage samples analyzed for pH,crude protein（CP）,neutral detergent fiber（NDF）,acid detergent fiber（ADF）,acetic acid（AA）,propionic acid（PA）,butyric acid（BA）,lactic acid（LA） and total acid（TA）.A.sparsifolia was ensiled successfully,although it was leguminous herbage,and homolactic fermentation was dominant.After A.sparsifolia and rice straw mix-ensiling,water soluble carbohydrates（WSC） in the ensilaged raw material were increased（P0.05）.Ammonia nitrogen/total nitrogen and pH were significantly reduced（P0.01）,while lactic acid（LA）,propionic acid（PA）（P0.01） and total acid（TA） content（P0.05） increased.Butyric acid（BA）（P0.05） was reduced when the A.sparsifolia content of the mixture exceeded 40%,and silage quality was improved.
出处
《草业学报》
CSCD
北大核心
2011年第2期109-116,共8页
Acta Prataculturae Sinica
基金
国家自然基金"骆驼刺刺糖组成及其改善青贮品质机理研究"(30960256)
公益性行业科研专项"多样化草产品生产加工利用研究"(nyhyzx07-022)
国家科技支撑项目"优质草产品生产加工与高效利用关键技术研究"子课题(2006BAD16B03-10)
畜牧科技兵团重点实验室课题"疏叶骆驼刺青贮调制技术研究"(HS20802)资助
关键词
骆驼刺
稻草
青贮品质
Alhagi sparsifolia
rice straw
silage quality
