What is the expected egg production and persistency of White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency?

White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency typically achieves a peak lay rate of 94% to 96% around 26-28 weeks of age, producing over 320 to 360 high-quality eggs per hen housed through an extended 72 to 80-week laying cycle.

What is the calcium and mineral requirement for White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency in peak production?

Peak production layers require 3.8% to 4.2% dietary calcium with 65-70% provided as coarse limestone (2-4 mm particles) to ensure sustained nocturnal calcium release during eggshell formation.

How should pullet lighting stimulation be scheduled for White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency?

Begin photoperiod step-up stimulation when pullets reach target body weight (approx. 1.35-1.45 kg at 16-17 weeks), increasing daylength by 30-60 minutes weekly until reaching 16 hours of continuous light.

Heritage & Commercial Layer

White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency

Comprehensive guide mapping White Leghorn egg production curves, active temperament, and feed conversion efficiency.

Scientific Overview

The White Leghorn is the historic foundation behind all modern commercial white egg hybrids. Originating from Tuscany, Italy, Leghorns are renowned for incredible feed-to-egg efficiency, chalk-white eggs, and alert, active foraging behavior.

White Leghorn Overview & Definition

The White Leghorn is defined as a lightweight Mediterranean egg breed characterized by white plumage, large red floppy single combs, white earlobes, and unmatched feed efficiency producing 280–320 white eggs annually.

Leghorns have a small body frame (1.8–2.1 kg mature weight), requiring significantly less feed for body maintenance compared to heavy dual-purpose breeds.

Production Curve & Performance Chart

White Leghorn performance standards:

Annual Egg Yield: 280–320 chalk-white eggs
Daily Feed Consumption: 100–110 grams/hen/day
Feed per Dozen Eggs: ~1.35 kg
Mature Hen Weight: 1.8–2.1 kg
Heat Hardiness: High (large single comb dissipates body heat)

Feed Intake & Foraging Temperament

Leghorns are flighty and active, requiring high perches and covered runs. Their low maintenance feed requirement makes them highly economical for white egg production.

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White Leghorn Layer Breed Profile: Egg Yield & Feed Efficiency — Frequently Asked Questions

Are White Leghorns good for free-range farming? expand_more

Yes, they are exceptionally active foragers and heat-tolerant, though their active nature requires good fencing.

What color eggs do White Leghorns lay? expand_more

Pure chalk-white eggs with smooth shells.

Why are White Leghorn combs flopped over in hens? expand_more

A large comb is a secondary sexual characteristic used for heat dissipation in warm climates.

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Compare Similar Breeds & Genetic Benchmarks

Evaluate comparative performance: growth curves, annual egg yield, climate tolerance, and feed efficiency against genetically comparable poultry breeds:

Lohmann LSL Classic → Elite white egg commercial layer with low feed intake Hy-Line W-36 → Industry standard high-efficiency white egg layer Lohmann Brown → Dark brown egg commercial layer counterpart

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Purebred Single Comb White Leghorn hen standing alert with prominent red comb and white earlobes — Photo: Kolforn • CC BY-SA 4.0

Related Calculators

Layer Hen Profit Simulator Open calculator Hen-Day Production Calculator Open calculator

Scientific Literature

American Standard of Perfection (2023).
Commercial Layer Management Guide (Hy-Line International).