Fishery/pisciculture is an industry devoted to the catching, processing, or selling of fish, shellfish, or other aquatic animals. Sericulture is the field of rearing silkworms for obtaining silk. Poultry is the class of domesticated fowl (birds) used for food or for their eggs. They typically include chicken and ducks, and sometimes turkey and geese. In dairy farm management, dairying is the management of animals for milk and its products for human consumption and deals with processes and systems that increase yield and improve the quality of milk.