Silage techniques for wet spent grains
According to Feedipedia.org and L Pernia, Silage is a good method for storing wet brewers grain for a longer period, particularly since ensiling does not alter their nutritive value (Geron et al., 2008).
- Fill the silo at once.
- Provide flow to the juice.
- Do not use too broad and tall silos.
- Quickly cool and press before ensiling (Boessinger et al., 2005)
- Can be ensiled without additive or other raw material provided they are put into the silo as soon as possible.
- Protect from rain and cover the grains hermetically (plastic film).
- Pack uniformly but not excessively so as to eliminate air pockets between the job and the tarp.
- The silo should have proper drainage to collect runoff
- Brewer’s grains silage is ready within 3 weeks and can be used over 6 months, and longer if a silage additive is used (Boessinger et al., 2005).
- Storage time can be improved by storing in a shaded or cool place
- They naturally acidify (pH <4.5) In the case of prolonged use (6 months), use a preservative for silage.
- Packing and ensiling characteristics can be improved by blending the wet brewer’s grains prior to ensiling with dry materials such as dry forage, bran or hulls, or with a source of fermentescible carbohydrates such as molasses or cereal grains (Blezinger, 2003; Göhl, 1982).
- Adding carbohydrates accelerates fermentation, releasing more acids and resulting in a stabler silage (Blezinger, 2003). Ensiling brewers grains with whole crop maize improves fermentation and stability (Koc et al., 2010).
- Dessiler daily very cleanly without unpacking the silo, and by covering the surface with plastic or some other covering material that minimizes surface spoilage (Allen et al., 1975a; Allen et al., 1975b)