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