Short answer: a layer hen can physically lay at most one egg a day, because her body needs about 24–26 hours to form each one. Over a full year that ceiling, combined with light, feed and water, works out to over 260 eggs a year for a modern commercial hybrid kept under good management, and as few as 20–30 eggs a year for a hen on a basic free-range system with no extra feed or light. The system a hen is kept in changes the number far more than people expect.
Egg count is one of the most searched layer questions, and most answers online give a single number with no source. The real figure moves with three things: the hard biological limit on how often a hen can lay, her age, and how she is managed — light hours, feed and water most of all.
| Farming system | Eggs per hen, per year | Source |
|---|---|---|
| Free-range scavenging, no extra feed | 20–30 | FAO |
| Improved scavenging, some supplementary feed | 40–60 | FAO |
| Semi-intensive (part-day housing) | ~100 | FAO |
| Intensive, deep litter housing | 160–180 | FAO |
| Intensive, fully caged/housed system | 180–220 | FAO |
| Modern commercial hybrid, good management | 260–300+ | Poultry Hub Australia |
Why can a hen not lay more than one egg a day?
It is simple biology, not a management choice. University of Illinois Extension explains that it takes 24 to 26 hours for a single egg to be formed and laid, and states plainly that even a good hen cannot lay more than one egg a day. Because that cycle is a little longer than 24 hours, a hen's lay time drifts later and later each day until she eventually skips a day and resets — which is why a flock's daily egg count is usually just under, not exactly equal to, the number of hens housed.
How many eggs does a layer hen lay in a year?
The honest answer is a range, not one number, because the system a hen is kept in matters as much as her breed. FAO’s review of small-scale poultry production lays out eggs per hen per year across five common systems, shown in the table above: output rises step by step from 20–30 eggs on a basic scavenging system, through 100 at semi-intensive, to 180–220 once a flock is fully housed with a complete diet. At the top end, Poultry Hub Australia reports that most commercial strains lay over 260 eggs a year, and some improved hybrid breeds pass 300 — close to an egg a day through most of their laying life.
The gap between 20 and 300+ eggs a year is not mainly about the hen’s genetics. It is light, feed and water, applied consistently, that let a hen approach her biological ceiling instead of falling well short of it.
At what age do hens start laying, and how long do they keep laying well?
University of Wisconsin-Madison Extension reports that hens, depending on breed, should begin producing eggs at 18 to 22 weeks old, given 14 to 16 hours of light a day and adequate nutrition. Egg numbers, egg size and shell quality all decrease every year a hen stays in lay, which is why commercial layer flocks are normally kept productive for about 2 to 3 years, even though the birds themselves can live 6 to 8 years. Body weight at the point a pullet starts to lay also sets up how well she performs through that first year, which is why weighing a sample of pullets before the flock comes into lay is worth the five minutes it takes.
What actually changes how many eggs your own flock lays?
Three things move the number on a working farm far more than breed choice alone:
- Light. Hens need enough daily light reaching the eye to keep the hormones that start egg-laying switched on; our layer egg production drop in winter guide covers the hours that matter and why shorter winter days cut output even in a healthy flock.
- Feed. A complete layer ration, fed on a steady schedule through the pullet and laying period, is what lets a hen reach the upper end of her breed's range; see our layer feeding schedule for the week-by-week plan.
- Water. An egg is mostly water, so a flock short of clean water for even a few hours will lay fewer eggs than the same flock with water always available.
What does this mean for layer farms in Pakistan?
Most commercial sheds in Pakistan run improved hybrid layers under housed or semi-housed conditions, which is exactly the management level FAO's figures show paying off the most — the step from semi-intensive to a fully housed system is worth roughly double the eggs per hen, before breed is even considered. If your flock's yearly count looks closer to the lower end of the commercial range, light hours, ration consistency and water access are the first three things worth checking, in that order, before assuming the breed or the feed is at fault. Our feed quality checks guide is a good next stop if the ration itself is in question.
Written by the Vital Feeds editorial team.
How this guide was made: the egg-formation timing is from University of Illinois Extension, the system-by-system yearly figures are from an FAO small-scale poultry production review, the commercial hybrid range is from Poultry Hub Australia, and the age-at-lay and decline-with-age figures are from University of Wisconsin-Madison Extension, all read in full; the draft was AI-assisted and fact-checked against those sources on 20 October 2026.
Want help reading your flock's egg count? Message the mill on WhatsApp (UAN 0311 1555136), see our layer feed range, or find your nearest Vital Feeds dealer.