The influence of Bonsilage Plus and Bonsilage Forte on microflora reduction during ensiling of alfalfa

Abstract

Crops at ensiling contain both aerobic and anaerobic microorganisms and a range of bacteria and fungi that affect silage quality. Typical classes of microorganisms on plants prior to ensiling are aerobic bacteria, lactic acid bacteria (LAB), enterobacteria, yeasts, molds, clostridia, bacilli, acetic acid bacteria and propionic acid bacteria. The quality of silage depends on the competition between different groups of microorganisms. LAB, which are responsible for the silage fermentation process, usually dominate the silage microflora, but undesirable microorganisms, that occur at low levels on fresh plant material, may grow during the storage of silage and lead to anaerobic or aerobic spoilage. In this study, effects of silage inoculants on reduction of microflora during ensiling of alfalfa have been investigated. The results showed that the addition of commercial silage inoculants, Bonsilage Plus and Bonsilage Forte, had significant effect in reducing total number of aerobic bacteria, enterobacteria, yeasts, moulds and sulphite reducing clostridia during ensiling of alfalfa.

Biljni materijal za siliranje sadrži aerobne i anaerobne mikroorganizme i niz bakterija i gljivica koji utiču na kvalitet silaže. Tipične klase mikro-organizama na biljkama pre siliranja su aerobne bakterije, bakterije mlečne kiseline (LAB), enterobakterije, kvasaca, plesni, klostridije, bakterije sirćetne kiseline i bakterije propionske kiseline. Kvalitet silaže zavisi od dominacije različitih grupa mikroorganizama. Bakterije mlečne kiseline, koje su odgovorne za proces fermentacije silaže, obično dominiraju mikroflorom silaže, ali broj neželjenih mikroorganizama, koji se javljaju u niskom nivou u svežoj biljnoj masi, može da raste tokom skladištenja silaže i dovede do njenog kvarenja. U ovom radu je ispitivan uticaj silažnih inokulanata na smanjenje mikroflore u toku siliranja lucerke. Rezultati su pokazali da je dodavanje komercijalnih inokulanata Bonsilage Plus i Bonsilage Forte, imalo značajan efekat na smanjenje ukupnog broja aerobnih bakterija, enterobakterija, kvasaca, plesni i klostridija tokom siliranja lucerke.