Laying Hen Mortality and Disposal Welfare on Farms

Mortality management on laying hen farms presents significant welfare challenges, from identifying suffering birds early to ensuring humane end-of-life practices.

Key Facts

Laying hen flocks of tens of thousands of birds can have daily mortality rates of 0.01-0.05% from various causes.
Common causes of mortality include egg peritonitis, Marek's disease, feather pecking injuries, and heat stress.
Injured or sick birds in conventional cage and cage-free systems are often difficult to identify among large flocks.
Daily walkthrough inspections are a regulatory requirement in most jurisdictions, but compliance varies.
Injured birds that are not identified early suffer prolonged pain and may be cannibalised by flockmates.
On-farm killing methods for individual birds include cervical dislocation, which must be performed correctly.
Maceration and composting are the primary disposal methods in most countries.
Electronic monitoring systems using cameras and sensors are improving early mortality detection.

Welfare Considerations

The sheer scale of modern laying flocks means individual welfare assessment is extremely challenging. A bird suffering from a broken keel bone, egg peritonitis, or pecking injury may go undetected for days in a flock of 50,000. Inadequate inspection frequency is a systemic welfare failure. When sick or injured birds are found, on-farm killing must be carried out competently and promptly — delays constitute unnecessary suffering. Training stockpersons in rapid and reliable assessment and killing techniques is essential, as is investment in technology-assisted monitoring to detect behavioural deviations that signal illness.

What You Can Do

Support farms that demonstrate investment in flock health monitoring technology.
Ask producers and retailers about their flock inspection protocols and mortality rates.
Support welfare certification schemes that require documented inspection frequency.
Advocate for mandatory stockperson welfare training and assessment.
Consider reducing egg consumption or shifting to higher-welfare certified products.
Support research into disease prevention that reduces mortality causes.