摘要
试验旨在探讨不同添加剂对玉米秸秆青贮品质的影响。试验以京科糯2000收获鲜食玉米穗后的茎秆为青贮原料,设T1 (0.02‰植物乳杆菌)、T2 (2.0%蔗糖)、T3 (0.05‰纤维素酶)、T4 (4%尿素)和CK(对照组,等量蒸馏水)共5个处理,每个处理3次重复。室温条件下青贮60 d,进行感官评价,测定营养成分、发酵品质及有氧稳定性。结果显示:各添加剂处理组玉米秸秆青贮的感官评价均优于CK。各添加剂处理组的pH值均显著低于CK (P<0.05),乳酸(LA)含量均显著高于CK (P<0.05);除T2外,各添加剂处理组的氨态氮(NH3-N)含量均显著低于CK (P<0.05)。T1和T4的干物质(DM)含量显著低于CK (P<0.05);T2、T3的粗蛋白(CP)含量显著高于CK (P<0.05);T2、T4的中性洗涤纤维(NDF)含量显著低于CK (P<0.05);T1和T2的粗灰分(Ash)含量均显著低于CK (P<0.05);T3的粗脂肪(EE)含量显著高于CK (P<0.05)。各添加剂处理组的有氧稳定时间均显著低于CK (P<0.05)。模糊隶属函数计算结果表明,纤维素酶处理玉米秸秆的D值最高。研究表明,各添加剂处理均可改善玉米秸秆青贮品质,纤维素酶处理效果最好,植物乳杆菌处理效果次之。
The purpose of the experiment was to investigate the effects of different additives on the quality of corn straw silage and to find the optimal silage conditions.In this experiment,the straw after harvesting ears of fresh corn of Jingkenuo 2000 were used as silage raw materials.A total of five treatments,T1(0.02‰ Lactobacillus plantarum),T2(2.0% sucrose),T3(0.05‰ cellulase),T4(4% urea),and CK(control group,the same amount of distilled water) were set up,and each treatment was repeated three times.Samples were taken after 60 days at room temperature for sensory evaluation to determine the nutrient composition,fermentation quality and aerobic stability.The results showed that the sensory evaluation of each additive treatment group was better than that of CK.The pH value of each additive treatment group was significantly lower than that of CK(P<0.05),and the content of lactic acid(LA) was significantly higher than that of CK(P<0.05).The content of ammonia nitrogen(NH3-N) in all additive treatment groups except T2 was significantly lower than that of CK(P<0.05).The dry matter(DM) content of T1 and T4 was significantly lower than that of CK(P<0.05).The crude protein(CP) content of T2 and T3 was significantly higher than that of CK(P<0.05).The content of neutral detergent fiber(NDF) in T2 and T4 was significantly lower than that in CK(P<0.05).The crude ash content(Ash) content of T1 and T2 was significantly lower than that of CK(P<0.05).The crude fat(EE) content of T3 was significantly higher than that of CK(P<0.05).The aerobic stabilization time of each additive treatment group was significantly lower than that of CK(P<0.05).The results of fuzzy membership function showed that the D value of corn straw treated with cellulase was the highest.The study indicates that the treatment of various additives can improve the quality of corn straw silage,and the silage quality of cellulase treatment was the best,followed by the treatment of Lactobacillus plantarum.
作者
李旭业
董扬
尤海洋
郭文凯
王佳
LI Xu-ye;DONG Yang;YOU Hai-yang;GUO Wen-kai;WANG Jia
出处
《饲料研究》
CAS
北大核心
2024年第5期99-103,共5页
Feed Research
基金
黑龙江省重点研发项目“青贮玉米评价及栽培调制技术研究与示范(项目编号:GA21D006)”
黑龙江省农业科学院创新跨越工程特色项目“青贮添加剂的研发及产业化应用(项目编号:CX23TS28)”。
