Today, due to the high population of human beings, scientists are increasingly concerned with food shortages and searching for alternative sources of dietary protein, such as algae, insects, and worms. Spirulina represents a superior alternative source, as it has a high nutrient content without toxicity, and can be reared in many countries worldwide. Given the limited amount of studies on the advantages and disadvantages of using Spirulina in birds' diets, this book fills an important research gap. It highlights the nutritional aspects of using Spirulina in poultry diets, and will appeal to animal husbandry and veterinary students, professors, feed formulators, poultry production consultants and farmers.