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Egg laying: feed per dozen

How much feed each dozen eggs takes, and what it costs.

Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.

Preliminary estimateRevision 12/11/2026
Laying hen batch

Laying rate is the percentage of birds laying per day: 85% means 0.85 egg per bird per day. It drops with age and during molting.

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—Feed per dozen eggs
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Feed cost per dozen by lay rate

How much the feed for each dozen costs at different laying rates, with the price you entered.

Tap the chart to see the values.

Cost per dozen by feed price

How the cost per dozen follows the feed price, with the lay rate entered.

Tap the chart to see the values.

What if the data changes?

Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.

Tap the chart to see the values.

Feed cost per dozen: lay rate and intake

Feed cost per dozen for combinations of lay rate and intake per bird, with the feed price entered.

Step by step with your numbers

The calculation done in steps, with the values you entered.

    The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.

    How to use

    Enter the number of laying hens, the daily feed intake per bird, the laying rate of the batch, and the price of the feed. The calculator shows how much feed each dozen eggs takes and the cost of that feed.

    Hypothetical example

    500 laying hens, intake of 110 g/day per bird, 85% lay rate and feed at R$ 2.50/kg.

    Feed per egg = 110 ÷ 0.85 = 129.4 g. Per dozen = 129.4 × 12 = 1.55 kg. Cost = 1.55 × 2.50 = R$ 3.88.

    The batch lays 425 eggs per day and consumes 55 kg of feed per day.

    Precautions

    • The calculation assigns all the feed to the eggs. Part of it goes to maintenance and growth, which this calculation does not separate.
    • Broken and discarded eggs are not counted; saleable production is lower than the laying rate.
    • For the full cost of an egg, add birds, labor and facilities to the feed cost.

    Method, assumptions, and references

    Equations used

    Feed per egg (g) = intake per bird (g/day) ÷ laying rate (eggs per bird per day)
    Feed per dozen (kg) = feed per egg × 12 ÷ 1,000
    Cost per dozen = feed per dozen × feed price

    Assumptions and limits

    • Assigns all the feed consumed to the eggs; in practice, part goes to maintenance and growth, which the calculation does not separate.
    • Average batch laying rate; it drops with bird age and during molting.
    • Does not include losses from broken eggs or bird culling.

    Standards and technical documents

    • Rostagno, H. S. et al. Tabelas brasileiras para aves e suínos: composição de alimentos e exigências nutricionais. 4th ed. Viçosa: UFV, 2017.

    Frequently asked questions

    Why does a dozen cost more when the laying rate is low?

    Because the bird eats almost the same amount and lays less. So each egg takes more feed.

    Is this value the cost of the egg?

    It is only the feed cost. The total cost includes birds, labor and facilities, and must be added up to compare with the market.