[Preservation of sugarbeet pulp by the addition of organic acids]
2002
Dolezal, P. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Vyzivy a Krmeni Hospodarskych Zvirat)
The effects of formic acid (4 L/t), benzoic acid (0.15 % w/w) and a mixture of formic and propionic acids (4 L/t) on the fermentation of sugarbeet pulp silage (122.7 g/kg of dry matter) were studied in a laboratory experiment. Silages were tested six times during 64 days of storage. The most intensive decrease of pH from the initial value 4.9 to 3.79 was observed after formic acid application four days after filling the silo. Sensorial quality (including consistency) of the silages with formic or benzoic acid addition was superior to that of the control silage. No butyric acid was determined in any of the variants. Application of formic acid decreased the pH value and depressed significantly the formation of fermentation acids. The highest concentrations of lactic acid and lactic acid/acetic acid ratio were found in silages with benzoic acid addition. High concentrations of acetic acid and ethanol were observed in the control variant. Control silages and silages prepared with addition of acid mixture were of the lowest quality.
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