Silage normally contains between 12 and 22 % crude protein (CP). While such levels 5 should be adequate for most productive livestock, in silages they are not. This is because of poor 6 utilization of N in silage. Most silage-based production rations require supplemental protein to meet 7 requirements for growth or lactation in ruminants. Silage protein is highly degradable in the rumen and as ...

The survival of pathogenic and spoilage micro-organisms in soil and on grass fertilized with spiked anaerobic digestion residue (ADR) was investigated in a climate chamber during periods of up to 56 d. In addition, the survival of these organisms over time was investigated during ensiling of grass at 390 g dry matter (DM) kg or 610 g DM kg. Micro-organisms included in these studies were: Clostr...