Intensive Farming

Laying Hen Bone Strength and Welfare

Osteoporosis and bone fractures are among the most widespread welfare problems in commercial laying hens.

Key Facts

Over 50% of laying hens have bone fractures at slaughter
Calcium demand for eggshell production depletes bone density
Enriched colony cages and barn systems improve bone strength compared to battery cages
Exercise opportunities are critical for bone mineralization in laying hens

Welfare Considerations

Commercial laying hens experience chronic bone depletion from the extreme egg production they have been bred for. Osteoporotic hens suffer fractures of the keel bone, vertebrae, and leg bones during normal activity. Pain from fractures persists for weeks, seriously compromising welfare in a significant proportion of all commercial flocks.

What You Can Do

Choose eggs from systems with exercise and enrichment opportunities
Support cage-free and free-range welfare certification
Advocate for keel bone fracture reduction as a key welfare target
Back research into laying hen breeds with lower production rates and better bone health