The effects of incorporating sugar beet pulp with forage maize at ensiling
on silage fermentation and effluent output using drum silos.
The Dairy Development Centre, Gelli Aur, in association with Iger, are monitoring the DMD value, crude protein, nitrate per cent and soluble sugar content of grass prior to ensiling
In traditional silage systems, ensiling
crops with less than 300 to 350 g [kg.sup.-1] moisture resulted in mold and heating because of difficulties in air exclusion (Gordon et al., 1961), while more than 700 g [kg.sup.-1] moisture resulted in more effluent, growth of clostridia, and lower voluntary intake (Gordon et al., 1959; Moore et al., 1960; McDonald et al., 1991).
Center scientists are investigating ways to preserve protein during ensiling
and improve nitrogen use by the dairy cow.
Fresh corn stover has good ensiling
characteristics due to its relatively high DM content at harvest, low buffering capacity, and adequate water-soluble carbohydrate (WSC) content [4,5].
Maize cobs give starch value to the feed while the wet stem is needed for water and sugars which aids fermentation," he points out.Opinya says crops such as maize, sorghum, oats and pearl millet are suitable for ensiling
because they contain fermentable carbohydrates (sugar) necessary for bacteria to produce sufficient organic acid that acts as a preservative.
At the end of the ensiling
period, three bales of each treatment group were opened, chemical and microbiological analyses were made.
Through the visual method, during ensiling
, it was observed that the color of the residual mass changed with the addition of the mixture of formic and propionic acids, passing from the slightly pinkish color, typical of the fresh fish, to light gray.
"Despite their bales being left in the field from ensiling
time to feeding time, the silage quality, both in terms of nutritional and preservation quality, was excellent."
Forage conservation methods such as ensiling
and haymaking allow a more reliable supply of quality feed when forage production is low or dormant (MUCK & SHINNERS, 2001).
The win-ning silage had been wilted for 24 hours prior to ensiling
at a dry matter of 27.8%.
, NPN may account for as much as 80% of TN (Papadopoulos and McKersie, 1983; Albrecht and Muck, 1991).