Farm Animals

Hen Keel Bone Fracture Research

Keel bone fractures affect the majority of laying hens in cage-free systems and represent a major but underrecognized welfare problem.

Key Facts

Over 50% of cage-free hens sustain keel bone fractures during their lives
Fractures cause chronic pain affecting movement and feeding behavior
Perch design and height influences fracture rates significantly
Better breeding and perch engineering can reduce but not eliminate fractures

Welfare Considerations

Keel bone fractures are a hidden welfare crisis in cage-free egg production. Consumer demand for cage-free eggs is a positive development but does not automatically ensure good welfare. Addressing fracture rates requires investment in housing design, breeding, and routine monitoring.

What You Can Do

Support research on keel bone fracture prevention in laying hens
Choose eggs from systems with demonstrated low fracture rates where available
Advocate for keel bone fracture monitoring as a mandatory welfare indicator
Engage with egg certification bodies to strengthen fracture prevention standards