Quality Lucerne Hay for Animal Feeding Stuff / hay cubes / lucerne hay and cubes, hay is an excellent source of good quality protein and fiber. Alfalfa is legume hay and times called "lucerne". These hays are higher in protein and minerals and are more palatable than grass hays. Alfalfa in particulars high in energy and is an excellent source of vitamins and minerals. When properly cured, alfalfa is the best of the legume h s from a nutrient standpoint. It has the most feed value of all the perennial pasture forages. Alfalfa is used for horses, dairy cows, beef cattle, sheep, chickens, turkeys and other farm animals.