Treatment of cutting surface
If the cutting surface of the silage becomes warm during removal, its aerobic stability is insufficient. Often it is management deficits that cause these problems. Before using preservatives, the following points must also be examined critically::
1. What is the feed out speed per week?
The minimum feed out speed per week of 1.5 - 2.0 m in winter and 2.5 - 3.0 m in summer must be ensured. If this does not fit, changes in the ration design could increase this. The cutting surface can also be stabilized with preservatives. However, their effect is limited. For the coming silo season, it is therefore essential to check to what extent the local conditions permit a modification of the silo system. If this is not possible, it will be necessary in future to consistently use silage additives (BioCool) to avoid heating up problems.
2. Will the cutting surface be loosened up during removal?
The more it is loosened up, the easier the air can penetrate into the silage. Work must be carried out with appropriate care and the cutting tools used must also be sharp. Sometimes it is also useful to change to block cutter or silo milling machine.
3. How far back is the silage foil? Is it sufficiently fixed or does the foil flutter?
The foil can be easily fixed to the cutting surface. It must not flutter (air pump effect). In addition, the air must not get between the silage and the foil. Tyres (--> link) are less suitable for fixing the foil. Better use silo bags. Furthermore, the silo foil must only be beaten back as far as necessary for removal. It should lie directly on edge with the cutting surface. The further the clamp is opened, the easier the air can penetrate into the silage and problems are pre-programmed.
These measures should always be carried out in parallel with the use of preservatives. The products themselves are distributed evenly over the cutting surface. Their effect is usually limited to only a few centimetres of depth, as they do not penetrate any further. Correctly applied, however, they are able to slightly reduce the microbial pressure from the open side of the clamp.
The following products can be used:
Grain Save NC 90
In any case, it is important to find the causes of the heating up problems. This means that the complete silage management has to be checked critically. Has it been sufficiently compacted? How was the compacting work? Has it been cutted short enough? Does DM and crude fibre content match? Just a few questions to be answered in this context. This is the only way to prevent problems and prevent them for the coming silage season.