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Commercial layer farming

Commercial layer farming is the production of table eggs from hybrid pullets housed in environment-controlled or open-sided sheds. India is the third-largest egg producer in the world, with annual output of about 3.8 billion kg in shell. Andhra Pradesh, Tamil Nadu, Telangana, Haryana, Maharashtra and Punjab are the leading layer-producing states, with major belts around Namakkal (Tamil Nadu) and Coastal Andhra.

Principle

Selected layer strains begin laying at 18-19 weeks of age and remain productive until 72-78 weeks, when egg-shell quality and lay rate decline and birds are sold as spent hens (Spent Hen Marketing). The economic unit is therefore a single laying cycle of roughly 12-14 months, after which the shed is cleaned and restocked with a new batch of point-of-lay pullets.

Implementation

The dominant housing system is the three-tier battery cage (Three Tier Cage System), typically holding three birds per cage in rows about 1.95 m long that accommodate around 90 birds per stack. Feed and water are supplied through troughs running the length of the row; manure is collected from below on belts or scrape-out floors. Bird strains are commercial hybrids such as BV 380 (Layer Chicken Bv 380) and similar Lohmann and Hy-Line crosses. Feed is delivered in a starter-grower-developer-layer phase programme (Starter Grower Finisher Feed) and is often mixed on farm (Self Mixed Poultry Feed). Daily egg-price benchmarks are published by the National Egg Coordination Committee (NECC) across major mandis.

Adoption context

Layer farming is more capital-intensive than broiler grow-out (Broiler Chicken) because of cage infrastructure and the long single-batch cycle. It is largely run by standalone farmers and small enterprises that bear price risk directly, in contrast to the integrator-dominated broiler segment. Cage-free and enriched-cage production remains a niche segment in India, driven mainly by quick-service-restaurant procurement commitments.

Limitations

Lay-rate and shell quality are sensitive to heat stress, water quality (Water Hardness Poultry), feed mycotoxins and Newcastle disease outbreaks. Inter-batch sanitation (Biosecurity Cleaning Between Batches) and disciplined brooding of replacement pullets (Brooding Chicks) are critical to keep mortality (Poultry Mortality Management) in check across the long cycle.

See also: Shed Height Ventilation.

References

  1. Poultry Layer Farming Model Bankable Project. NABARD.
  2. Cage-free egg sector — perspectives of Indian poultry producers. PMC.