添加黄梁木叶和壳寡糖对甘蔗梢青贮饲料发酵品质及有氧稳定性的影响  

Effects of addition of Neolamarckia cadamba leaves and chitosan oligosaccharides on fermentation quality and aerobic stability of sugarcane top silage

作　　者：郭香 吴硕 郑明扬 陈德奎 邹璇 陈晓阳 周玮 张庆 GUO Xiang;WU Shuo;ZHENG Ming-yang;CHEN De-kui;ZOU Xuan;CHEN Xiao-yang;ZHOU Wei;ZHANG Qing(College of Forestry and Landscape Architecture,South China Agricultural University,Guangdong Province Research Center of Woody Forage Engineering Technology,Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm,State Key Laboratory for Conservaion and Utilization of Subtropical Agro-bioresources,Guangzhou 510642,China)

机构地区：[1]华南农业大学林学与风景园林学院,广东木本饲料工程技术研究中心,广东省森林植物种质创新与利用重点实验室,亚热带农业生物资源保护与利用国家重点实验室,广东广州510642

出　　处：《草业学报》2022年第6期202-210,共9页Acta Prataculturae Sinica

基　　金：广东省林业科技创新项目(2018KJCX001,2019KJCX001);广东省自然基金项目(2020A1515011253)资助。

摘　　要：为了探究添加黄梁木叶(NCL)与壳寡糖(CO)对甘蔗梢青贮发酵饲料品质和有氧稳定性的影响,试验设6个处理:无添加(对照,CK)、15%NCL、30%NCL、CO、15%NCL+CO和30%NCL+CO。青贮210 d后结果显示,NCL处理显著降低了饲料pH值(P<0.05)、非蛋白氮和氨态氮含量,显著提高了乳酸、乙酸、粗蛋白和真蛋白含量(P<0.05)。有氧暴露7 d后,NCL处理组的pH值显著降低(P<0.05)、非蛋白氮和氨态氮含量(P<0.01)极显著降低,而粗蛋白含量在NCL和CO处理下极显著增加(P<0.01)。此外,NCL处理还极显著增加了乳酸含量(P<0.01)。30%NCL、15%NCL+CO和30%NCL+CO处理显著提高了(P<0.05)甘蔗梢青贮饲料的有氧稳定性。综上所述,NCL和CO的添加对甘蔗梢青贮饲料的发酵品质和有氧稳定性都有积极的影响,其中以15%NCL+CO处理效果最好。The purpose of this study was to investigate the effect of adding Neolamarckia cadamba leaves(NCL)on the fermentation quality and aerobic stability of sugarcane top silage with or without chitosan oligosaccharides(CO).There were 6 treatments in the experiment:No addition(control,CK),15%NCL,30%NCL,CO,15%NCL+CO,and 30%NCL+CO.After 210 days,the ensiled materials were analyzed for fermentation quality.The analyses showed that NCL treatments significantly decreased(P<0.05)the pH,the non-protein-N(NPN)and ammonia-N(NH3-N)contents and significantly increased(P<0.05)the lactic acid(LA),acetic acid(AA),crude protein(CP),and true protein contents.After aerobic exposure for 7 days,the pH(P<0.05),NPN content,and NH3-N content(P<0.01)decreased in the NCL treatment,but the CP content increased(P<0.01)in the NCL and CO treatments.In addition,the LA content increased(P<0.01)in the NCL treatment.The 30%NCL,15%NCL+CO,and 30%NCL+CO treatments improved(P<0.05)aerobic stability.In summary,the addition of both NCL and CO had positive effects on the fermentation quality and aerobic stability of sugarcane top silage,and the 15%NCL+CO treatment performed better than the other treatments.

关 键 词：甘蔗梢 黄梁木 壳寡糖 发酵品质 有氧稳定性 

分 类 号：S816.53[农业科学—饲料科学]