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首页> 外文期刊>Journal of the Science of Food and Agriculture >Resistance to aerobic deterioration of total mixed ration silage: effect of ration formulation, air infiltration and storage period on fermentation characteristics and aerobic stability.
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Resistance to aerobic deterioration of total mixed ration silage: effect of ration formulation, air infiltration and storage period on fermentation characteristics and aerobic stability.

机译：混合日粮青贮饲料对好氧性能的抵抗力：日粮配方，空气渗透和储存时间对发酵特性和好氧稳定性的影响。

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BACKGROUND: High aerobic stability can be expected when wet brewers' grains are stored as a total mixed ration (TMR) silage. To understand the factors affecting the stability, the effects of ration formulation, air infiltration and storage period were studied. RESULTS: A TMR containing wet brewers' grains, hay, maize, wheat bran, beet pulp and molasses was ensiled in laboratory silos for 14 and 56 days. The effects of hay species (lucerne or sudangrass) and air infiltration (Exp. 1) and of excluding one, two or three items from the six ingredients (Exp. 2) were examined. Ethanol was the main fermentation product in all TMR silages in this study. Aerobic deterioration occurred in 14 day silages prepared with sudangrass hay along with air infiltration (Exp. 1), and with the simplest recipe where three items (hay, maize and wheat bran) were excluded (Exp. 2). No deterioration occurred in 56 day silages regardless of ration formulation and air infiltration. Yeasts receded in 56 day silages, except with the simplest recipe, to the 102 cfu g-1 level and remained undetectable in the presence of air (Exp. 2). CONCLUSION: TMR silage can resist aerobic deterioration provided that a sufficient ensiling period has elapsed. Silages stored for only a few weeks may be susceptible to deterioration when air is infiltrated or where fewer ingredients are used in the TMR mixture.
机译：背景：当将啤酒酿造厂的谷物作为总混合日粮（TMR）青贮饲料存储时，可以期待有氧稳定性高。为了了解影响稳定性的因素，研究了日粮配方，空气渗透和储存期的影响。结果：将包含湿啤酒糟，干草，玉米，麦麸，甜菜浆和糖蜜的TMR在实验室筒仓中压实14天和56天。检查了干草种类（卢塞恩或苏丹草）和空气渗透的影响（实验1），以及从六种成分中排除了一项，两项或三项的影响（实验2）。在这项研究中，乙醇是所有TMR青贮饲料中的主要发酵产物。用苏丹草干草和空气渗透（实验1）制备的青贮饲料在14天的青贮饲料中发生有氧变质（最简单的配方，其中不包括干草，玉米和麦麸）三种（实验2）。无论日粮配方和空气渗透如何，在56天的青贮饲料中都不会发生变质。除最简单的配方外，酵母在56天的青贮饲料中消退至102 cfu g-1的水平，并且在有空气的情况下仍然无法检测到（实验2）。结论：TMR青贮饲料可以抵抗需氧退化，前提是经过足够的青贮期。当空气渗入或TMR混合物中使用的成分较少时，储存仅几周的青贮饲料可能会变质。

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