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poultry farming
Poultry farming is the raising of domesticated birds such as chickens, ducks, turkeys and geese for the purpose of farming meat or eggs for food. Poultry are farmed in great numbers with chickens being the most numerous. More than 50 billion chickens are raised annually as a source of food, for both their meat and their eggs.〔(【引用サイトリンク】title=Compassion in World Farming - Poultry )〕 Chickens raised for eggs are usually called layers while chickens raised for meat are often called broilers.〔 In the US, the national organization overseeing poultry production is the Food and Drug Administration (FDA). In the UK, the national organization is the Department for Environment, Food and Rural Affairs (Defra).
==Intensive and alternative poultry farming==
According to the World Watch Institute, 74 percent of the world's poultry meat, and 68 percent of eggs are produced in ways that are described as 'intensive'.〔''State of the World 2006'' World watch Institute, p. 26〕 One alternative to intensive poultry farming is free-range farming using lower stocking densities. Poultry producers routinely use nationally approved medications, such as antibiotics, in feed or drinking water, to treat disease or to prevent disease outbreaks. Some FDA-approved medications are also approved for improved feed utilization.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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