Silage making from mowed grasses and its potential use as a feed resource for sheep

Author: T.D.E. Mpanza, T.M. Langa, N.P. Bareki, K. Choeu, J. Mamabolo, B.D. Nkosi
Year: 2025
Issue: 1
Volume: 18
Page: 56 - 64

This study evaluated silage making from mowed grass on fermentation characteristics and nutrient intake by sheep. Mowed grass was collected from a local stadium in Pretoria and brought to a farm for silage making and animal feeding. The grass was mixed with sugarcane molasses at 5% of the biomass and ensiled in 210 L drums that were lined with plastic bags (900mm x 1200mm; 240 L capacity; 18 microns).. The grass mixture was ensiled for 60 days, opened and sampled for the analysis of nutrient content and silage fermentation characteristics. The animal feeding trial was then conducted whereby two groups of seven animals each (average liveweight of 31.11 ± 0.49 kg) were fed either silage or a feed that was produced on farm (control) for five weeks. The silage group was supplemented with sheep pellet feed at a rate of 200 g daily. Sheep were weighed at the start of the trial and then weekly until the end of the trial. Mixing the mowed grass with sugarcane molasses improved the sugar content of the silage. As can be expected, silage fermentation reduced the pH and produced lactic acid. Feed intake was higher (P<0.05) from the silage group compared to the control group, suggesting that the silage was well accepted by the sheep. Silage from mowed grass can be produced with the addition of sugarcane molasses and can be a good source of feed for ruminants during the dry season especially drought conditions.

Keywords: drums, fermentation, forage, grass, stadium turf
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