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High DM grass (>30%) normally produces a good fermentation with a steady pH drop. It also has a higher residual level of water soluble carbohydrates than lower DM material.

Higher DM grass is vulnerable to the rapid growth of yeasts and moulds when the clamp or clamp face is exposed to air Yeasts and moulds proliferate when oxygen is present, as they are able utilise organic acids (lactic acid) to increase their growth rate.

In doing so, they produce large amounts of heat (lost energy) and potentially harmful fungal mycotoxins. This reduces silage quality and can result in a loss of animal performance.

Treat high DM grass with axcool gold to prevent yeast and mould growth which results in aerobic spoilage.