Animal husbandry is the agricultural practice of feeding, breeding and raising animal livestock whose primary purpose is to provide meat and milk. Meat animals include beef, cattle, sheep and meat goats. Milk animals include cows and buffaloes. Poultry is a class of domesticated fowl used for food and for their eggs. Fisheries is also an important source of animal food, which is concerned with rearing, catching and selling of fish, molluscs (shell fish) and crustaceans prawns, crabs, etc.