Light Colour Used to Control Cannibalism in Poultry

Correct Answer: Red

Red light is used to control cannibalism and feather pecking in poultry. Under red light, blood from wounds appears dark/invisible, reducing the stimulus for other birds to peck at injured birds.

Why Cannibalism Occurs

• Poultry are attracted to the colour red — wounds, prolapsed tissue (vent), or blood-stained feathers trigger pecking by other birds.
• Primary cause: Fibre-free diet (diet should contain 3–4% crude fibre).
• Other causes: overcrowding, boredom, nutritional deficiencies, bright white light.

Management Strategies to Control Cannibalism

• Use red light (wounds not visible under red light).
• Debeaking at day-old age.
• Ensure adequate fibre in diet.
• Reduce stocking density.
• Provide adequate feeders and waterers (competition triggers aggression).