are hay and alfalfa the same thing?
Alfalfa Hay (also known as Legume Hay) averages 21.2% protein and 11% NSC (simple starches). Grass Hay averages 10.8% protein and 12.9% NSC. ... The Calcium in Alfalfa is higher, but the Phosphorus is about the same as grass hay, which could lead to an imbalance in the diet of a given horse.