Egg Production Per Layer

Egg production per layer on Ugandan farms averages 4.3 eggs a week for exotic laying hens, which works out at about 61 percent of days laying. Published breeder standards for the same kind of bird sit above 90 percent through the first year of lay. This page covers the laying curve, the two different percentages used to measure it, and what sits in the gap.

Eggs Per Layer Per Week on Ugandan Farms

The national livestock census is the only measurement of Ugandan layer performance taken across the whole country, and its numbers are not flattering. In 2021 Uganda's laying flock stood at about 6.4 million hens, double the 3.2 million counted in 2008. Those hens produced an estimated 4.2 million eggs a day, up from 1.97 million.

Then comes the figure that ought to change how people talk about layer farming here. Across all laying hens the average was 4.5 eggs a week. Broken down by breed, indigenous hens averaged 5 eggs a week and exotic hens averaged 4.3. Exotic birds were 65.5 percent of the laying flock and indigenous birds 33.8 percent, so the improved commercial birds were the majority and they were laying less often than the local hens they were brought in to outperform. The 2008 census found the same pattern.

Read that carefully, because the obvious reading is the wrong one. An indigenous hen lays a clutch, goes broody, sits, raises chicks and stops laying for weeks. Five eggs a week while she is in lay does not become 260 eggs in a year, and nobody who keeps local birds thinks it does. An exotic layer does not go broody at all, so her weekly rate is close to her rate for the whole year. Four point three eggs a week means she is laying on roughly three days in five.

So the census is not a story about clever local chickens. It is a measurement of how far below their own genetics Uganda's commercial layers are being run, and the rest of this page is about why.

One more detail from the census worth knowing. Exotic layer performance varied sharply by region: the highest weekly average was 6 eggs in the Elgon sub region and the lowest was 3 eggs in Lango, Teso and Karamoja. Indigenous hens averaged about 5 eggs a week almost everywhere. Management, not geography, is what moves an exotic bird from 3 to 6.

Hen Day and Hen Housed: Two Different Production Figures

Almost every production figure you will be quoted is one of these two, and the difference between them is the difference between how the surviving birds are doing and how your money is doing.

Hen day egg production divides today's eggs by the hens alive today. MAAIF gives the formula directly: total number of eggs collected, multiplied by a hundred, divided by the number of hens in the pen. Hen housed egg production divides by the number of hens you originally put in the house, whether they are still alive or not.

Until the first bird dies the two are identical. After that they separate, and the gap widens with every death for the rest of the cycle.

Most content about layers quotes the hen day figure and calls it eggs per bird, which is where a lot of optimistic planning comes from. On a flock with real Ugandan mortality the difference is larger than the breeder standard above, because the standard assumes livability of 97 percent to week 60 and 91 percent to week 100. A flock losing ten or fifteen percent of its birds will see hen housed production diverge much faster.

The Laying Curve From Point of Lay to Peak Production

A layer does not switch on. She ramps, and the shape of that ramp is consistent enough across strains and sources to plan from.

MAAIF puts the start of lay at week 18. A published breeder standard shows about 7 percent of hens laying in that week, so the first eggs are a trickle rather than an event. The point where half the flock is laying comes at 139 days from hatch on that standard, and a Kampala hatchery publishing its own targets puts it at 143 days. Both land a little past week 19.

From there the climb is steep. The same Kampala hatchery's production guide for a barn system runs 2.3 percent at week 18, 16 percent at week 19, 40.6 percent at week 20, 65.1 percent at week 21, 82.9 percent at week 22 and 91.8 percent at week 23, reaching 94.9 percent by week 26 and holding. Its separate practical sheet gives slightly different waypoints, 6 percent at week 18 and 36 percent at week 20, which tells you how much the first fortnight of lay can move.

Those figures come from a breeder's published standard for a commercial brown layer in a conventional system. They are achieved under controlled conditions with controlled feed, controlled light and controlled temperature, and they are the right benchmark to measure against rather than a forecast of what a Ugandan house will do. Use the shape and treat the level as the ceiling.

Peak Egg Production and How Long a Layer Flock Holds It

Three sources, two Ugandan, put the peak in the mid nineties. MAAIF describes egg production reaching a peak of about 96 percent six to eight weeks after lay begins, and names the uniformity of the chicks as the condition that decides whether it gets there. A Kampala hatchery gives 95 percent as its peak target for both cage and barn systems. The breeder standard gives 93.6 to 98.5 percent, at week 26.

That MAAIF figure comes from the layer breeder section of the manual rather than its commercial layer section, so treat it as the order of the thing rather than a commercial guarantee. All three agree on the same answer: a well reared flock should be laying on more than nine days in ten at its best.

The peak is broader than most people expect. On the breeder standard a flock is still above 90 percent at week 40, fourteen weeks past peak, and only drops below it somewhere in the forties. So the high plateau runs for roughly the first twenty weeks of lay, which is the stretch that pays for the rearing period.

Uniformity is the word to hold onto. MAAIF ties the peak to how uniform the chicks were, and uniformity is settled in the growing phase by feeder space, feed quality and weighing. A flock where half the birds hit 1,500 g at week 18 and half are at 1,200 g cannot peak, because the two halves come into lay weeks apart. Layer farming in Uganda covers the rearing period that decides this.

The Long Decline and When to Off Lay a Layer Flock

After peak, production falls at roughly half a percentage point a week and keeps falling for the rest of the cycle. On the breeder standard that is 87 to 93 percent at week 60, 80 to 86 percent at week 80, and 71 to 78 percent at week 100.

MAAIF's commercial layer programme marks off laying at week 80 and its worked budget runs an 80 week cycle. Modern breeder standards now run to 100 weeks. Which of those you follow is an economic decision rather than a biological one, and two figures decide it.

First, feed intake does not fall with production. The breeder standard holds daily feed at 110 to 118 g a bird from week 26 right through to week 100 while the egg count drops by twenty percentage points. Feed per dozen eggs climbs with it, from 1.48 to 1.54 kg across weeks 20 to 60 to 1.55 to 1.61 kg across weeks 20 to 100. Every week past peak costs slightly more per egg than the week before.

Second, quality drifts. Egg weight climbs steadily from about 43 g at week 18 to 61 to 65 g by week 70, and MAAIF notes that the larger eggs laid at the end of the laying period can have weaker shells. On the breeder standard the shell colour score falls from 87 at week 38 to 79 at week 90, and internal quality measured in Haugh units falls from 90 at week 38 to about 80 by week 90. Later eggs are bigger, which sounds good until a buyer grading for shell strength or albumen quality starts rejecting them.

Put those together and the answer is that a flock should come off lay when feed cost per tray plus rejection losses passes what the eggs earn, which is a different week on every farm and in every season.

Total Eggs Per Layer Over a Full Cycle

Here are the three numbers that matter, in ascending order, and the distance between them is the most useful thing on this page.

MAAIF's own worked budget for a deep litter layer flock over 80 weeks plans on 300 eggs per hen, which is ten trays. That is a Ugandan ministry planning figure for Ugandan conditions and it is a sensible line to build a budget on.

A Kampala hatchery's published target for its own layers is 459 eggs per hen housed to week 100 in a cage system, or 414 to week 90 in a barn. Those are targets under good Ugandan management, not measurements of the average farm.

The breeder standard for a commercial brown layer gives 368 to 391 eggs per hen housed by week 80 and 466 to 498 by week 100, achieved under controlled conditions.

So at the same 80 week cycle MAAIF plans 300 and the breeder standard offers 368 to 391. That is a gap of roughly 70 to 90 eggs per bird, or twenty to twenty five percent. MAAIF has not made an error. The ministry's planning figure already assumes a Ugandan flock will run about a third below the published standard, and the arithmetic bears that out: 300 eggs across the 434 days of a week 19 to week 80 laying period is about 69 percent hen housed production, against a standard above 90 percent for the first year.

And the census suggests the typical Ugandan exotic flock is below even MAAIF's assumption, at about 61 percent of days laying. Three tiers, then: what the genetics can do, what MAAIF expects a Ugandan farm to get, and what Ugandan farms are actually recorded as getting.

Why Ugandan Layer Flocks Fall Short of the Standard

None of the causes is mysterious and none of them is genetic. They are the same five things in almost every case, and four of the five are within a farmer's control.

The feed half of this sits in the layer feeding guide, including what aflatoxin does and why feed quality is difficult to verify in Uganda. The disease half sits in the layer vaccination schedule and the poultry disease identification guide.

Heat Stress and Egg Production in Ugandan Layer Houses

A chicken is comfortable between 18 and 25 degrees Celsius. That is her thermoneutral zone, the band in which she can shed body heat through her skin and her surroundings without working at it, and her own body temperature sits at 41 degrees. Above that band she has to spend energy on cooling, and that energy comes out of growth and egg production.

Now compare that band with a Ugandan layer house. Across most of the country, daytime temperatures inside an iron roofed poultry house sit above 25 degrees for a large part of every day, all year. Heat stress in Uganda is not an event that arrives in a dry spell. It is a standing condition, which is precisely why it gets overlooked as a cause of poor production.

Breeder technical material on heat stress in layers is blunt about the threshold. Above 33 degrees, high mortality and large production losses are obvious to anyone. Below that, heat stress is often missed as the explanation for subtle losses in egg production and shell quality, which is the situation most Ugandan houses are in most of the time. The listed effects run through reduced feed intake, lower egg production, smaller eggs, weaker shells, thinner albumen, and rising mortality, cannibalism and immune suppression.

Humidity makes it worse, because what the bird feels is temperature and humidity together. A humid 28 degrees is harder on a hen than a dry 30, which matters in a country where much of the laying flock sits around Lake Victoria.

Water is the first lever. The ratio of water to feed intake is about two to one at 21 degrees and rises to roughly eight to one at 38 degrees, so a house that was adequately watered in the morning can be badly short by the afternoon. Nipple drinkers need a flow rate above 70 millilitres a minute to keep up. Cooler water helps directly, because the bird loses core heat to it, and flushing water lines in the afternoon to clear the hot water standing in them is a cheap intervention.

Air movement is the second. In an open sided Ugandan house that means rolling curtains up during the day for a genuine cross draught rather than leaving the birds in still air, and it means not stocking the house at the top of the density range. Feeding in the cooler parts of the day, early and late, gets more feed into a bird that will not eat at noon.

One thing not to do: adding more calcium to the mash when heat has thinned the shells. The mechanism runs through the hen's blood chemistry rather than her calcium intake, and the layer feeding guide explains why extra limestone cannot reach it.

What a Sudden Drop in Egg Production Usually Means

A gradual decline after peak is the curve doing what the curve does. A sudden drop is information, and it is worth reading before reaching for a treatment.

Feed and water come first, because they are the fastest acting and the most common. A changed ration, a bad batch, an empty trough overnight or a failed water supply can move the tray count within two or three days. So can a hot spell, and so can any disturbance that stops birds eating: a dog in the house, a vaccination, a move, a beak trim.

Disease comes next, and MAAIF's disease tables name several conditions by their effect on the egg. Infectious laryngotracheitis can drop production by up to 60 percent alongside gasping and bloody mucus. Egg drop syndrome 76 produces loss of colour in pigmented eggs and soft or shell less eggs as birds reach peak, with no treatment available. Avian encephalomyelitis shows as paralysis with a drop in production in adults. Infectious bronchitis is on the layer vaccination schedule partly for this reason.

Nutritional causes are worth checking too, because MAAIF states plainly that in layers a deficiency of calcium, phosphorus or vitamin D causes a drop in egg production. That is a formulation or a storage problem rather than an infection, and it is the one where the feed store answers the question faster than the vet does.

Then there is the answer nobody likes: eggs that are being laid and not collected. Eggs on the floor, eggs eaten by the hens, eggs taken by someone. MAAIF's instruction to collect four to six times a day exists partly because an uncollected egg is an egg that will not be counted.

Measuring Egg Production Per Layer and Keeping the Records

None of the figures on this page is any use without a daily count. MAAIF's laying flock card records the age of the birds, eggs laid per day, average eggs per week, mortality, feed consumed and culled birds, and those six fields are enough to run a layer flock properly.

Compare the weekly figure against the curve rather than against last week. A flock at 82 percent in week 22 is on track. A flock at 82 percent in week 30 is four weeks past a peak it never reached, which is a different problem needing a different answer.

The poultry record keeping template gives you the fields, and the poultry farm daily checklist keeps collection and counting from slipping on busy days.

Egg Production Questions From Ugandan Layer Keepers

How many eggs should one layer give me in a year? There is no single honest number, which is why this page gives three. MAAIF plans 300 eggs per hen across an 80 week cycle, so roughly 250 in a calendar year of lay. A breeder standard offers 368 to 391 by week 80 under controlled conditions. The national census records exotic hens at 4.3 eggs a week. Where your flock lands inside that spread is set by pullet rearing, feed, water, heat and disease, in that order.

Why are my exotic layers laying less than my neighbour's local chickens? Compare over a whole year, not a week. A local hen in lay can match an exotic bird for a fortnight and then go broody for a month, which an exotic layer never does. If your exotic flock is genuinely behind over months, the census says you have plenty of company and the causes are almost certainly weight at point of lay, feed, water or heat rather than the birds.

At what age should my layers start laying? First eggs around week 18, half the flock laying by roughly week 20. If week 20 arrives with almost no eggs, weigh the birds: a flock that did not reach 1,450 to 1,500 g by week 18 comes into lay late and peaks low.

What is a good laying percentage for a Ugandan flock? Above 90 percent at peak is what the standards and both Ugandan sources describe, and holding above 80 percent through the first year of lay is a genuinely good result on a Ugandan farm. Judge it against the flock's age every time, because the same percentage is excellent in one week and poor in another.

Do eggs get bigger or smaller as the flock ages? Bigger, steadily, from around 43 g at first lay to the low sixties by week 70. That is not entirely good news. Shells thin as eggs enlarge, internal quality slowly declines, and a buyer grading strictly will reject more late cycle eggs.

What income should I expect per layer over a cycle? Work it from your own hen housed count and the current tray price rather than from anyone's projection. MAAIF's own worked budget for 500 layers over 80 weeks, using 300 eggs a hen, lands on a profit of about four percent of total expenses, with feed the overwhelming share of cost. Read that as a warning about how thin the margin is rather than a forecast, since the prices underneath it change constantly. Check current egg prices and cost of raising 500 layers for the working figures.

Can I push a flock past week 80 to get more eggs? You can, and the breeder standards run to week 100. Watch two things while you do: feed per dozen eggs, which rises every week because intake stays flat while the count falls, and your reject rate, because shell and albumen quality drift downwards through the late cycle.

Checking Egg Prices and Planning Your Layer Flock

Egg prices in Uganda move with feed costs and with the school calendar, so plan a flock against current prices rather than a figure remembered from last season. Egg prices and poultry feed prices are the two that decide whether a cycle works, and the ratio between them matters more than either on its own. Start a daily count from the first week of lay so you have your own curve to compare against the benchmarks here, and talk to a veterinary officer early if the flock is more than a couple of weeks behind the curve with no obvious explanation. Our poultry guides cover the rest of the enterprise.