Screw-pressed fractions from green forages as animal feed: Chemical composition and mass balances

摘要

In colder humid areas, green forages are recognised as high protein yielding crops and have the potential to be a locally grown sustainable protein source. However, without processing, the protein cannot be properly utilised by monogastrics. By screw pressing, a pulp fraction suitable for ruminants and a protein concentrate suitable for monogastrics can be produced. The aim of this study was to analyse the chemical composition of the produced fractions and the mass balance distribution of protein and dry matter (DM) between the fractions. Mass balances are important in order to determine the potential of biorefining of forages as a tool for sustainable feed production.