Genetic Influences on the Behavior of Chickens Associated with Welfare and Productivity

摘要: Many behaviors in poultry can be modified by genetic selection. Selection of laying hens for maximum egg production had the unfortunate side effect increased rates beak inflicted damage on other birds. Selective breeding has eliminated broodiness and either or decreased behaviors, such as hysteria, fearfulness, appetite broilers, social dominance, ability to Genetic selection used reduce that cause welfare problems. However, it must approached with caution avoid unintended consequences would detrimental welfare. A calm, docile bird appears behaviorally may take longer its heart rate return normal after is frightened. The use group instead single-bird effectively undesirable feather pecking maintain high production. An entire birds selected selecting individuals.