Effect of organic acids on nutritive value, yeast numbers, mould fungi and aerobic stability in red clover silage

Selwet, Marek (2008) Effect of organic acids on nutritive value, yeast numbers, mould fungi and aerobic stability in red clover silage. ÁLLATTENYÉSZTÉS ÉS TAKARMÁNYOZÁS, 57 (1). pp. 73-80. ISSN 0230-1814

Preview

Text 75_ISSN_1788-9979_vol_15_no_2_2022_223allattenyesztes_2008_57_1.pdf Download (170kB) | Preview

Abstract

The aim of these studies was to ascertain the effects of chemical additives Amasil®99 (FA=formic add), Luprosil (PA=propionic acid), Amasil®Combi (PFA+i=propionic acid+formic acid+ammonium ions) on the cell counts of yeasts and mould fungi in silage. The silage was prepared of red clover (Trifolium pratense L). Effects of the applied preparations on silage oxygen stability were ascertained. The performed chemical analyses comprised the determination of the content of dry matter (DM), butyric acid and acetic acid, ethanol, water-soluble carbohydrates (WSC), crude protein (CP) and pH of silage. The applied preparations were found to reduce the numbers of yeast and mould fungi cells in the examined samples of silages. The growth of fungi was inhibited most strongly by the PFA+i preparation. The yeast cell counts dropped (P<0.05) from 20.8x106 colony forming units (CFU) g/kg silage in the control to 12.6x10® CFU g/kg silage in the combination with PFA+i, whereas counts of the mould fungi cells - from 14.1 x 103 CFU g/kg silage in the control to 8.5 x 103 CFU g/kg silage in the combination with PFA+i. The applied conservants increased (P<0.05) the content of DM in the silage in anaerobic phase. The highest concentration DM was detected in samples with PFA+i=246.5 g/kg with PA=245.1 g/kg with FA=243.1 g/kg and lowest in the CRCS (control red clover silage) — 241.1 g/kg. The chemical additives decreased concentrations of lactic acid and acetic acid as well as ethanol in anaerobic phase. The conservants increased (P<0.05) the quantities of water-soluble carbohydrates (CRCS=21.3 g/kg, PFA+i=25.1 g/kg, PA=24.3 g/kg and FA=23.1 g/kg) and decreased the content of crude protein and pH in the examined silage in anaerobic phase. The chemical additives were found to improve the oxygen stability of silages after 7 days of sample exposure to the air.

Actions (login required)

Edit Item