RT Journal Article
SR Electronic
A1 Vyskočil, Ivo
A1 Doležal, Petr
A1 Doležal, Jan
A1 Pyrochta, Václav
A1 Kalhotka, Libor
T1 Evaluation of fermentation quality of brewers' grains ensiled in combination with malt sprouts and chemical conservation additive
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 56
IS 5
SP 227
OP 234
DO 10.11118/actaun200856050227
UL https://acta.mendelu.cz/artkey/acu-200805-0030.php
AB The aim of the work was to evaluate the effect of addition of humidity absorbent (malt sprouts) and chemical conservation additive on fermentation process quality of brewer grains' silage. Chemical conservation additive was based on formic acid, propionic acid, benzoic acid and ammonium formate content. In a model experiment the fresh brewer grains were used. A dry matter (DM) content of brewer grains was 187.4 g/kg. Six treatments with three repetitions per treatment were prepared. The treatments A&lt;sub&gt;1&lt;/sub&gt;, A&lt;sub&gt;2&lt;/sub&gt; and A&lt;sub&gt;3&lt;/sub&gt; were not supplied by humidity absorbent. Treatment A1 was a control treatment without any additive. The treatments A&lt;sub&gt;2&lt;/sub&gt; and A&lt;sub&gt;3&lt;/sub&gt; were supplied by chemical conservation additive in a dose of 3 L per tonne and 6 L per tonne, respectively. The treatments B&lt;sub&gt;1&lt;/sub&gt;, B&lt;sub&gt;2&lt;/sub&gt; and B&lt;sub&gt;3&lt;/sub&gt; were supplied by malt sprouts to reach DM content of conserved matter on level 320-350 g/kg. Moreover the treatments B&lt;sub&gt;2&lt;/sub&gt; and B&lt;sub&gt;3&lt;/sub&gt; were supplied by chemical additive with its dose 3 and 6 L per tonne. Model silages were evaluated after 8 months of conservation at average laboratory temperature 26-28 °C, from each treatment were the final laboratory samples taken and analyzed. During conservation of treatments B&lt;sub&gt;1&lt;/sub&gt;, B&lt;sub&gt;2&lt;/sub&gt; and B&lt;sub&gt;3&lt;/sub&gt; were no drain recognized. From A&lt;sub&gt;1&lt;/sub&gt; treatment drained 1300 ml of waste fluid that is 145 L per tonne of conserved matter. That was significant (P &amp;lt; 0.01) the malt sprouts addition support the lactic acid production and eliminate acetic acid production. There was no propionic acid or butyric acid detected in silages with malt sprouts event in these silages were analyzed higher (P &amp;lt; 0.01) concentration of ammoniac. Chemical additive supplementation improved (P &amp;lt; 0.01) the pH value and water leach acidity. The results show the malt sprout addition eliminates waste fluid drain and improves fermentation process. The higher concentration of chemical additive (6 l/t) inhibited the fermentation process in our model experiment.