乳酸菌与纤维素酶对草甸草原天然牧草青贮品质的影响

发布时间：2018-01-20 03:19

本文关键词： 天然牧草青贮乳酸菌纤维素酶　出处：《畜牧兽医学报》2017年05期 　论文类型：期刊论文

【摘要】：旨在探讨不同添加剂对天然牧草青贮的影响,提高天然牧草青贮的利用效率,指导天然牧草的生产与利用。本研究以草甸草原盛花期的天然牧草为材料,设置6个处理组,分别为SLAB(真空袋,乳酸菌(2×10~5cfu·g~(-1)))、SCE(真空袋,纤维素酶(0.8g·kg~(-1)))、SCK(真空袋,无添加,对照)、BLAB(青贮窖,乳酸菌(2×10~5cfu·g~(-1)))、BCE(青贮窖,纤维素酶(0.8g·kg~(-1)))、BCK(青贮窖,无添加,对照),每组3个重复,青贮60d后对不同添加天然牧草青贮饲料的微生物组成、发酵品质、营养成分进行比较分析。结果表明,所有添加剂组青贮效果均较好。添加乳酸菌和纤维素酶均可显著提高天然牧草青贮的乳酸菌含量、乳酸含量和乳酸/乙酸含量(P0.05),青贮乳酸菌组乳酸菌含量高于纤维素酶组,添加剂提高蛋白质保存率(P0.05),显著提高可溶性碳水化合物利用率(P0.05),显著降低pH、氨态氮/总氮和酸性洗涤纤维含量(P0.05),显著降低酵母菌含量(P0.05),对灰分含量无显著影响(P0.05)。综上表明,乳酸菌更适于用作天然牧草青贮饲料的添加剂,可在草原牧区将天然牧草由小包装青贮向大规模青贮推广应用。
[Abstract]:The purpose of this study was to investigate the effect of different additives on natural forage silage, to improve the utilization efficiency of natural forage silage, and to guide the production and utilization of natural forage. Six treatment groups were divided into two groups: SLAB (vacuum bag), lactic acid bacteria (lactic acid bacteria) 2 脳 10 ~ (5) CFU 路g ~ (-1) and SCE (vacuum bag). The cellulase content was 0.8g 路kg ~ (-1) ~ (-1) and SCK (vacuum bag, no addition, control group) BLAB (silage cellar, lactic acid bacteria 2 脳 10 ~ (5) CFU 路g ~ (-1)). BCE (silage cellar, cellulase 0.8 g 路kg ~ (-1)) BCK (silage cellar, no addition, control group, 3 repeats in each group). After 60 days of silage, the microbial composition, fermentation quality and nutritional composition of different natural forage silage were compared and analyzed. Addition of lactic acid bacteria and cellulase could significantly increase the content of lactic acid bacteria, lactic acid and lactic acid / acetic acid in natural forage silage (P 0.05). The content of lactic acid bacteria in silage lactic acid bacteria group was higher than that in cellulase group. Ammonia nitrogen / total nitrogen and acid detergent fiber content (P0.05N) significantly decreased the content of yeast P0.05N, and had no significant effect on ash content. Lactic acid bacteria are more suitable for natural forage silage and can be used to popularize natural forage from small package silage to large scale silage in grassland pastoral area.
【作者单位】：内蒙古农业大学草原与资源环境学院草地资源教育部重点实验室;内蒙古自治区农牧业科学院;
【基金】：农业部公益性行业项目“饲草青贮工艺技术及配套设施装备的研究与示范”(201303061);农业部公益性行业项目“干旱牧区天然打草场培育及利用技术研究与示范”(201303060) 内蒙古农牧业科学院青年基金(2014QNJJM07)
【分类号】：S816.53
【正文快照】： 随着我国草牧业的不断发展,我国畜产品需求量日益增长,饲草料的质量和数量成为制约畜牧业发展的首要问题。天然草原作为牧草的主要来源之一,由于不合理的利用造成牧草利用率降低,导致饲草料制约草地畜牧业发展的问题尤为突出。在草原牧区,由于饲草加工工艺和贮存条件的落后,牧

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