An investigation into the sources of lactic acid bacteria in grass silage
An investigation into the sources of lactic acid bacteria in grass silage
复制标题
牧草青贮饲料中乳酸菌来源的调查
DOI：
10.1111/j.1365-2672.1987.tb02397.x
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发表时间：
1987
影响因子：
4
通讯作者：
M. P. Fenton
中科院分区：
文献类型：
--
作者：
M. P. Fenton
在1983年的青贮季节进行了调查，以确定农业机械的贡献，目前在草上的乳酸菌的数量。虽然没有乳酸菌被分离出站立的作物，高达103/g被发现在草，因为它进入夹具。对与草密切接触的机械进行的检查显示，割草机刀片和用于将草装入夹子的越野车的叉子上存在乳酸菌。在1984年的季节，乳酸菌的发生在特定批次的草从站立的作物通过青贮饲料后2天的夹具进行了研究。在刈割和收集过程中，牧草中乳酸菌的数量逐渐增加。萎蔫导致数量的较大的初始增加，但未萎蔫的青贮饲料在48 h后具有最高的计数。在青贮饲料制作前从机器中分离出的大多数生物体是链球菌。在青贮饲料后，使生物体的数量和比例发生变化，在所有情况下，数量都在增加，特别是从割草机中，乳酸杆菌和链球菌占主导地位，这表明通过机械的通道起到了除草的作用。
During the 1983 silage making season an investigation was carried out to determine the contribution made by farm machinery to the numbers of lactic acid bacteria present on grass. Although no lactic acid bacteria were isolated from the standing crop, up to 103/g were found in the grass as it entered the clamp. Examination of machinery in close contact with the grass revealed lactic acid bacteria on the mower blades and on the forks of the rough-terrain vehicle used to pack the grass into the clamp. During the 1984 season the occurrence of lactic acid bacteria in particular batches of grass from the standing crop through to silage after 2 d in the clamp was studied. There was a gradual increase in numbers of lactic acid bacteria in the grass during the process of mowing and collection. Wilting resulted in a greater initial increase in numbers but non-wilted silage had the highest count after 48 h. The majority of organisms isolated from machinery before silage making were streptococci. After silage making the number and proportions of organisms changed, with numbers increasing in all cases, particularly from the mower with lactobacilli and streptococci predominating which indicates that passage through the machinery served to inoculate the grass.