Effect of Additiveson Lucerne Silage with High Dry Matter
The dry matter of lucerne silage has great importance for the development and result of the fermentation process. An optimal dry matter of ensilaged fodder is a natural preservative. The mown matter should not be left in place more than two days; the fodder should not become wet due to rain. With increasing time of stay of the matter in the field, the negative epiphyte microflora gets more activated, the fermentation process and the nutrient contents gets more endangered (due to breathing, growth of proteolysis, ashes, etc.), and the health soundness of silages gets impaired. If the fodder dries too much, the risk of losses rises both in the field and due to inappropriate fermentation and to mould infestation. As soon as the withered lucerne starts losing leaves due to loss of water, the most precious items grown will stay in the field. The ensilaging ability of lucerne is stated to be ideal with a dry matter of 40 % (Merchen and Sattern, 1983). Makoni et al (1993) found that withering increases the proportion of more soluble fractions of nitrogen substances, but at the same time also the proportion of chloroplast. Fermentation in anaerobic environment leads to change the content of nutrients, primarily of nitrogen substances and fibre. Proteolytic changes of lucerne silages, aimed at reduction of degradation of proteins under use of different silage agents were studied for example by Guo et al (2008).
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