Spent-hen culling and marketing

Spent-hen culling and marketing is the end-of-cycle disposal of commercial layer hens whose egg production has fallen below an economic threshold. Sale of spent hens recovers a portion of the residual capital invested in the pullet at the start of the cycle, frees the cage space for a new flock and feeds the meat-and-soup-stock segment of the chicken-meat market.

Principle

Modern layer strains (Layer Chicken Bv 380) sustain peak production of 90-94% from about 28 weeks of age, then decline gradually. When hen-day production falls below approximately 75% — typically at 72-78 weeks of age — feed cost per egg rises, shell quality deteriorates, and the cage block is more profitable when restocked with a fresh point-of-lay batch than when the existing flock is continued. The culling decision is therefore driven by a combination of lay rate, egg-price expectations and the cost of bringing in a replacement batch.

Implementation

The whole flock is removed in a single sweep so that the empty house can be cleaned, disinfected and rested through the standard inter-batch sanitation cycle (Biosecurity Cleaning Between Batches) before fresh pullets are placed. Live birds are sold by weight to traders who supply the processed-meat segment, the soup-stock and broth segment, the curry and biryani trade in Maharashtra, Karnataka, West Bengal and Andhra Pradesh, and the lower-end frozen-chicken segment. Spent-hen meat is tougher and more flavoursome than commercial broiler meat (Broiler Chicken) and is preferred for slow-cooked dishes. Per-kg live-weight realisation is well below broiler prices because of the higher fat content, smaller breast portion and tougher texture. The National Egg Coordination Committee (NECC) publishes daily spent-hen price quotations alongside egg-price benchmarks across the major poultry zones.

Adoption context

The practice is universal in three-tier cage layer farms (Three Tier Cage System) running standard commercial layer cycles (Commercial Layer Farming). Backyard country-chicken systems do not have an equivalent end-of-cycle decision because birds are slaughtered piecemeal for household and local sale through the year.

Limitations

Spent hens are particularly vulnerable to handling injury (osteoporotic fractures from long caged confinement) during catch-out, and welfare concerns about transport and slaughter conditions have driven increased attention from animal-welfare regulators and major retailers. Commercial pressure to lengthen the lay cycle beyond 78 weeks, supported by induced moulting in some markets, is constrained in India by the availability of replacement pullets and shell-quality decline.

References

Poultry Layer Farming Model Bankable Project. NABARD.