Reducing Hen Mortality in Laying Flocks: Welfare and Management

Mortality rates in commercial laying flocks can reach 10-15% annually. Understanding and addressing causes saves lives and indicates better welfare overall.

Key Facts

Average annual mortality in commercial laying flocks ranges from 4-15% depending on system and management
Feather pecking and cannibalism account for a significant proportion of non-disease mortality in laying hens
Prolapse of the vent (oviduct) is common in high-producing hens and is painful and often fatal
Bone fractures are extremely prevalent in laying hens due to calcium depletion from continuous egg production
End-of-lay "spent hen" disposal is a welfare concern when transport and slaughter standards are poor
Mortality audits are an important welfare indicator tool in laying hen production

Welfare Considerations

High mortality in laying flocks is not merely an economic loss — each death represents welfare failure, often preceded by significant suffering. Feather pecking leading to cannibalism reflects chronic frustration in barren or overcrowded systems. Skeletal fractures from calcium depletion are painful and common — post-mortem surveys consistently find fracture rates of 30-70% in conventional caged systems, compared to lower rates in enriched environments with perches that build bone density. Mortality reduction is both a welfare goal and a welfare indicator: flocks with lower mortality are demonstrably experiencing better lives.

What You Can Do

Choose eggs from producers with low mortality rates certified by welfare assurance schemes
Support enriched colony and free-range systems that reduce feather pecking through natural behavior expression
Advocate for end-of-lay transport and slaughter standards that apply to "spent hens"
Learn about bone health in laying hens to understand the welfare implications of calcium demands