Field peas as a protein source for dairy cows

What is the effect of a partial substitution of soybean meal and corn grain with field peas in dairy cow diets? Researchers did some studies on this topic and conclude that replacement is possible, but adding extra amino acids might be advisable. Total European Union protein crop production currently occupies only 3% of the Union’s arable land and supplies only 30% of the protein crops consumed as animal feed in the EU. Almost 70% of the EU’s protein rich feeds are imported, and for soybean