Nutritional Welfare of Laying Hens

Laying hens have exceptional nutritional demands due to continuous egg production that can cause metabolic disease and welfare problems.

Key Facts

A laying hen produces 250-300 eggs per year requiring enormous calcium mobilisation
Calcium deficiency causes osteoporosis — 30-80% of end-of-lay hens have fractured bones
Feed restriction to reduce fat deposition in broiler breeders causes chronic hunger
Complete layer diets must be precisely formulated to meet micronutrient demands
Foraging behaviour in hens is motivated by both nutritional and psychological needs

Welfare Considerations

The nutritional demands of modern high-producing laying hens are extreme — they produce their body weight in eggs every few weeks. This requires perfect dietary balance, particularly for calcium and phosphorus. When diets are inadequate or when hens cannot consume enough feed, osteoporosis develops causing painful spontaneous bone fractures. End-of-lay hens commonly have multiple healed fractures indicating chronic pain throughout their productive lives. Nutrition is inseparable from welfare in intensive egg production systems.

What You Can Do

Choose eggs from producers with transparent welfare standards including nutritional protocols
Support research into dietary approaches that reduce osteoporosis in laying hens
Advocate for end-of-lay welfare standards covering both nutrition and humane slaughter
Learn about the metabolic demands of high egg production on hen welfare
Keep backyard hens at lower production levels to reduce metabolic welfare pressure