Effect of biological and chemical additives on fermentation process in lucerne silage
2002
Gallo, M. | Mlynar, R. | Rajcakova, L. (Vyskumny Ustav Zivocisnej Vyroby, Nitra (Slovak Republic))
Conservation of lucerne is a complicated process in which the right choice of silage additive must be considered. The aim of this work was to verify the effect of biological and chemical additives at lucerne conservation in laboratory conditions, in silos with the content 1.7 l. The application of silage additives made itself felt in decrease of weight losses in the silage matter and in improved parameters of the fermentation process. The application of the biological additive manifested itself in decrease of pH (5.27:5.42) in comparison with the untreated silage, higher content of lactic acid (28.32:25.50) and butyric acid as well as in higher content of NH3-N out of the total N (18.89:19.24). The silage treated with chemical additive showed markedly better parameters of fermentation process compared with the untreated silage as well as with silage treated with biological additive. The differences in pH (5.01:5.42), in content of lactic acid (54.00:25.50), butyric acid (0.80:13.73) and NH3-N out of total N (11.43:19.24) were statistically significant and highly significant between the chemically treated silage and other silages. The level of fermentation process manifested itself in the content of nutrients also. Chemically treated silage had the highest content of crude protein and energy at the lowest content of fibre and its fractions. The results of the experiment document the possibility to use the biological and chemical additives at conservation of lucerne from 3rd cut. The application of the biological additive was of low efficiency considering the feed quality and low content of sugar and we cannot recommend it for use in practice. The effect of the chemical additive was very good and it should be used in practical conditions also
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