摘要
研究旨在分析添加不同水平糖蜜、乳酸菌对棉秆微贮发酵品质影响。试验采用双因素试验设计,共8个处理,分别添加4%(A)、5%(B)糖蜜及0(L0)、0.1%(L1)、0.2%(L2)、0.3%(L3)植物乳杆菌对棉秆进行微贮。分别于发酵第1、7、15、30、60 d取样,分析发酵品质和营养品质。结果显示:单独添加糖蜜或与植物乳杆菌组合添加均可提高棉秆微贮的发酵品质。发酵60 d,各处理pH值最高为4.22,5%糖蜜水平下L2、L3微贮棉秆的乳酸(LA)、水溶性碳水化合物(WSC)、干物质(DM)含量均显著高于其余处理(P<0.05);5%糖蜜水平下L2、L3微贮棉秆的中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)含量显著低于其余处理(P<0.05);5%糖蜜组微贮棉秆的氨态氮/总氮值(NH-N/TN)显著低于4%糖蜜组(P<0.05)。研究表明,添加糖蜜与植物乳杆菌能够有效提高棉秆发酵品质,改善发酵特性;从实际生产角度考虑,推荐糖蜜添加量为5%,植物乳杆菌添加量为0.2%。
The study was to analyze the effect of adding different levels of molasses and lactic acid bacteria on quality of cotton stalk micro-storage fermentation.A two-factor design was used in experiment,a total of eight treatments were added with 4%(A),5%(B)molasses and 0(L0),0.1%(L1),0.2%(L2),0.3%(L3)Lactobacillus plantarum for microsilage of cotton stalk.Samples were taken on the 1st,7th,15th,30th and 60th d of fermentation,to analyze the fermentation quality and nutritional quality.The results showed that adding molasses alone or in combination with Lactobacillus plantarum could improve the fermentation quality of cotton stalk micro-storage.After 60 d of fermentation,pH value of each treatment was the highest at 4.22,and the content of LA,WSC and DM in L2 and L3 at the level of 5%molasses were significantly higher than those in other treatments(P<0.05).The content of NDF and ADF in L2 and L3 at5%molasses level were significantly lower than those in other treatments(P<0.05).The NH-N/TN value in 5%molasses group was significantly lower than that in 4%molasses group(P<0.05).The study indicates that the addition of molasses and Lactobacillus plantarum can effectively improve the fermentation quality of cotton stalks and improve the fermentation characteristics.From the perspective of actual production,the recommended amount of molasses and Lactobacillus plantarum is 5%and 0.2%,respectively.
作者
徐鹏飞
王旭哲
杨寒珺
黄星宇
车昭碧
鲁为华
孙新文
XU Peng-fei;WANG Xu-zhe;YANG Han-jun;HUANG Xing-yu;CHE Zhao-bi;LU Wei-hua;SUN Xin-wen
出处
《饲料研究》
CAS
北大核心
2022年第17期94-101,共8页
Feed Research
基金
国家现代农业产业技术体系资助
第十四师饲草、饲料资源有效利用科技服务项目(项目编号:KJTP201805)。
关键词
棉秆微贮
糖蜜
植物乳杆菌
发酵品质
营养品质
cotton stalk micro-storage
molasses
Lactobacillus plantarum
fermentation quality
nutritional quality
