The efffect of urea additive on the fermentation process of ensilaged sugar beet pulp
2002
Dolezal, P. | Biro, D. (Mendel Univ. of Agriculture and Forestry, Brno (Czech Republic))
In the present study, the effect of urea added to pressed sugar beet pulps on the quality of the ensilage fermentation process were investigated and compared with the non-treated control. In the ammonia-treated silage, insignificantly higher contents of dry matter and pH but significantly higher ammonia content (by 36.6%) were determined, as compared to the control. The ammonia-treated silage contained statistically insignificantly (P more than or equal 0.05) lower contents of LA and volatile fatty acids AA and PA, and insignificantly higher (P more than or equal 0.05) content of butyric acid (31.86 : 28.08). The undesirable butyric acid (BA) made the portion of 53.08 % in the urea-treated silage and that of 46.82% in the control. An LA/VFA ratio was very low (less than 1) in both types of silage. The silage quality was evaluated to be unsatisfactory. In the ammonia-treated silage, significantly higher content of crude protein (by 49.9%) and lower crude fibre content (215.22 : 205.445 g/kg DM) over those in the control silage were detected. As to the influence of urea additive on acidification rate in ensilaged sugar beet pulp, it caused a delay of 12 days in pH value and a decrease in titrating acidity
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