摘要
以鲜质量比7∶3的绿狐尾藻和麦麸为原料混合青贮,分别添加0%、2%、4%、6%的葡萄糖,固定添加植物乳杆菌,测定混合青贮饲料的发酵品质、营养品质及有氧稳定性。结果表明:添加葡萄糖能显著(P<0.05)降低混合青贮饲料的pH值和氨态氮与总氮质量分数之比,显著(P<0.05)提高乳酸质量分数,降低丁酸质量分数,改善青贮发酵品质;显著(P<0.05)降低粗蛋白和粗纤维质量分数,且显著(P<0.05)提高相对饲用价值;当葡萄糖添加量为4%时显著(P<0.05)降低中性洗涤纤维和酸性洗涤纤维质量分数;添加0%、2%、4%、6%葡萄糖处理的有氧稳定性分别为>360、226、>360、62 h。综合评价结果显示,鲜质量比7∶3的绿狐尾藻和麦麸混合青贮中添加2%葡萄糖,混合青贮有更好的发酵品质和营养品质及有氧稳定性。
In this study,the silage was mixed with Myriophyllum elatinoides and wheat bran at the fresh mass ratio of 7∶3with addition of certain amount of Lactobacillus plantarum and 0%,2%,4%and 6%glucose,respectively.The fermentation quality,nutritional quality and aerobic stability of the mixed silage were measured to evaluate the effect of the glucose on the quality of mixed silage.The results showed the addition of glucose could significantly(P<0.05)reduce pH,butyric acid,NH3-N/TN,crude protein and crude fiber mass fraction of mixed silage,and increase lactic acid mass fraction,further optimized fermentation characteristics.Adding 4%glucose significantly reduced mass fraction of neutral detergent and acid detergent fiber(P<0.05).The aerobic stability of the mixed silage treated with 0%,2%,4%and 6%glucose was>360,226,>360 and 62 h,respectively.The comprehensive evaluation results showed that with the combined condition,the fresh mass ration of 7∶3,with 2%glucose addition,the mixed silage of Myriophyllum elatinoides and wheat bran could achieve the improved fermentation quality,nutritional quality and aerobic stability.
作者
曹欣
吴康乐
李慧
向佐湘
肖润林
张志飞
CAO Xin;WU Kangle;LI Hui;XIANG Zuoxiang;XIAO Runlin;ZHANG Zhifei(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Institute of Subtropical Agroecology,Chinese Academy of Sciences,Changsha,Hunan 410125,China)
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第6期718-722,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家重点研发计划项目(2021YFD1700804)。
关键词
绿狐尾藻
麦麸
葡萄糖
混合青贮
发酵品质
营养品质
有氧稳定性
Myriophyllum elatinoides
wheat bran
glucose
mixed silage
fermentation quality
nutritional quality
aerobic stability
