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The effects of legume-grass inoculation on silage fermentation, aerobic stability and milk yield

机译:豆科草接种对青贮发酵,有氧稳定性和牛奶产量的影响

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A silage inoculant, blend of bacteria strains Enterococcus faecium, Lactobacillus brevis and Lactobacillus flantarum, was used for legume-grass silage vs an untreated control silage. Mixed grass-legume sward (35% Loliumperenne, 15% Phleumpratense, 45%Trifoliumpratense and 5% others species in a second cut) were wilted for 6-8 hours to 32% dry matter chopped and then ensiled into two ferro-concrete trenches (1001 each). Twenty-four dairy cows divided into two analogous groups were fed control and inoculated silages, and feed intake and their productivity was evaluated over a 92 day feeding period. Addition of lactic acid bacteria improved the fermentation profile by lowering pH, butyric acid, ammonia-N and dry matter loss. Treated silage had a higher concentration of lactic and acetic acid and better aerobic stability. Inoculation had small effect on silage dry matter intake or milk yield but utilization of feed energy and the milk hygienic quality was better with inoculated silage.
机译:青贮淤积剂,细菌菌株的混合物肠球菌粪便,乳酸杆菌菌株和乳杆菌絮状物,用于豆科草青贮术vs未经处理的控制青贮饲料。混合草豆科豆科植物(35%Loliumperenne)(35%Holiumpratense,45%Trifoliumpratense,45%Trifoliumpratense和5%在第二切割中的物种)枯萎了6-8小时至32%的干物质切碎,然后被切成两条铁混凝土沟( 1001每个)。分为两组两组奶牛的二十四个奶牛被喂食控制和接种的青色,并在92天的饲养期内评估进料摄入及其生产率。通过降低pH,丁酸,氨-N和干物质损失,添加乳酸菌的添加改善了发酵曲线。经过治疗的青贮血清浓度较高,乳酸和乙酸更好的稳定性。接种对青贮干大物摄入或牛奶产量的影响很小,但使用饲料能量和乳卫生质量较好,接种的青贮饲料更好。

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