Aeration improves the hygiene of cattle slurry and the quality of grass forage and silage

IF 1.7 4区 农林科学 Q2 AGRONOMY
H. Heinonen‐Tanski, Petri Leinonen, E. Niskanen, Minna M. Mielonen, Harri Räsänen, Tiina Valta, K. Rinne, E. Joki-Tokola
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引用次数: 14

Abstract

The aeration of slurry at mesophilic temperature improves its hygiene, provided no fresh slurry is added to the tank during the 3–4 weeks of aeration. Microorganisms, such as Listeria monocytogenes, Yersinia enterocolitica and related species and coliphages, were reduced by 90–99.9%. However, the number of Clostridium was not affected. The typical odour of slurry diminished. The use of aerated slurry as fertilizer on growing grass may cause less risk of contamination either by enteric microorganisms or by butyric acid‐producing clostridia than the use of non‐aerated slurry. The hygiene level of grass was also sufficient when grown in a cold, rainy late summer and used for silage. None of the 62 samples of silage prepared from a second‐harvest grown in rainy conditions and fertilized with aerated slurry were found to have deteriorated. However, three samples out of 63 made during the same period but fertilized with non‐aerated slurry were observed to have deteriorated completely. Neither spreading method, ...
通气可以改善牛浆的卫生状况,提高牧草和青贮饲料的质量
如果在3-4周的曝气期间不向罐中添加新鲜浆料,则在中亲温下对浆料进行曝气可改善其卫生性。单核增生李斯特菌、小肠结肠炎耶尔森菌及其相关菌种和噬菌体减少90-99.9%。然而,梭状芽孢杆菌的数量不受影响。典型的泥浆气味减弱。与使用未充气的泥浆相比,在生长中的草地上使用充气泥浆作为肥料可能会减少被肠道微生物或产生丁酸的梭菌污染的风险。当生长在寒冷多雨的夏末并用于青贮时,草的卫生水平也足够。在多雨条件下种植的第二次收获的62个青贮样品中,未发现有腐坏现象。然而,在同一时期制作的63个样品中,有3个样品用未充气的浆料施肥,观察到完全变质。两种传播方式,……
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来源期刊
CiteScore
4.40
自引率
0.00%
发文量
56
审稿时长
2.3 months
期刊介绍: Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .
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