Azolla is a floating fern which resembles algae. Azolla is grown in paddy fields or in shallow water bodies and they multiply very rapidly. Azolla is rich in proteins, essential amino acids, vitamins, (Vitamin A, Vitamin B12 and Beta-Carotene), growth promoter intermediaries and minerals like calcium, potassium, phosphorous, ferrous, copper, magnesium. On a dry weight basis, it contains 25-35% of protein, 10-15% minerals and 7-10% of amino acids, bioactive substances and biopolymers. The carbohydrate and fat content of Azolla is very low. Its nutrient composition makes it highly efficient and effective feed for livestock. Livestock can easily digest it owing to the high protein and low lignin content and get quickly accustomed to it. Moreover, it is easy and economical to grow.