Why broiler and layer vaccination programmes differ, the diseases covered, example timings used in Ghana and the records to keep. Your vet sets the final plan.
Halaal Farms Ghana team4 October 2026 · 13 min read
Count the days. A broiler is sold at six to eight weeks. A layer pullet lays her first egg at about eighteen to twenty weeks and stays in the house until roughly eighty weeks, sometimes longer. One bird needs protection for two months and the other for close to two years, through several rainy seasons and harmattans. That difference in lifespan, more than anything else, is why there is no single "poultry vaccination schedule", and why copying a broiler timetable for layers leaves the layers exposed for most of their lives.
The tables below are examples of patterns commonly used in Ghana. They are there to help you understand a programme, question it and keep to it. They are not a prescription. The vet or district veterinary office that knows which diseases are circulating around you sets the final programme.
A vaccine shows the bird's immune system a weakened or killed form of a disease organism, so that the bird builds its own defences before it meets the real thing. Two points follow from that, and both are widely misunderstood.
First, protection is not instant. After a live vaccine, useful immunity takes roughly one to two weeks to develop. After a killed vaccine it takes three weeks or more. A flock vaccinated on Monday and exposed on Wednesday was, in effect, not vaccinated.
Second, one dose rarely lasts. Immunity from a single mild live vaccine fades over weeks, which is why programmes repeat the same disease with a second dose, often using a slightly stronger strain the second time.
There are two broad kinds of vaccine in common farm use:
| Disease | What it does | Usual vaccine route | Who gets it |
|---|---|---|---|
| Newcastle disease | Viral. Sudden heavy deaths, gasping, green diarrhoea, twisted necks, collapse in egg production | Live in water or eye drop; killed by injection before lay | Every bird on every farm |
| Gumboro (infectious bursal disease) | Viral. Strikes at about three to six weeks, kills some and weakens the immunity of survivors | Live in drinking water | All chickens in the first month |
| Infectious bronchitis | Viral. Coughing and sneezing, then fewer eggs with wrinkled, thin or pale shells | Live, often combined with Newcastle; killed before lay | Layers; many broiler programmes |
| Marek's disease | Viral. Paralysis and tumours in growing and young adult birds | Injection at the hatchery on day one | Layers and other long-lived birds |
| Fowl pox | Viral. Scabs on comb, wattles and face, or cheesy patches in the mouth; spread largely by mosquitoes | Wing-web stab | Layers and long-lived birds |
| Fowl typhoid, fowl cholera, infectious coryza | Bacterial. Deaths or swollen faces and lost production in older birds | Injection | Layers, where the vet judges the risk is present |
| Egg drop syndrome | Viral. Sudden fall in production with soft-shelled and shell-less eggs | Killed, injected before lay | Layers |
Each of the main diseases has its own article. Start with Newcastle disease in Ghana and Gumboro disease, since those two shape every programme in the country, then fowl pox and Marek's disease if you keep layers.
The first vaccination is not yours to give. Marek's vaccine only works if it reaches the chick before the chick meets the virus, which in practice means an injection at the hatchery on the day of hatch. Many hatcheries also give a first Newcastle or Newcastle and bronchitis vaccine by spray or eye drop before the boxes leave.
This matters for your calendar. If the chicks had a Newcastle vaccine on day one, your vet may place the first farm dose differently from a batch that had none. Always ask the supplier, in plain words, which vaccines were given, and write the answer on the first line of your record. Chicks from Halaal Farms Ghana are vaccinated at the hatchery before they leave, and we will tell you what a particular batch has had when you place your order.
A breeder hen that has been well vaccinated passes antibodies into the yolk of her eggs. The chick absorbs them and hatches with borrowed protection against the same diseases. This maternal immunity is useful: it covers the chick for the first one to three weeks while its own immune system matures.
It also creates a problem. Those same antibodies attack a live vaccine as if it were the disease. Give the vaccine while maternal antibody is still high and much of it is neutralised before it can do its work. Wait too long and there is a gap in which the borrowed protection has gone and nothing has replaced it.
The difficulty is that maternal antibody does not fall at the same speed in every chick. In one box some chicks lose it by ten days and others still carry it at three weeks. That is the real reason Gumboro vaccine is given twice, one to two weeks apart. The first dose takes in the chicks whose maternal antibody has already dropped. The second catches those that were still blocked the first time. It is also why two farms buying from different hatcheries can be given different dates by the same vet.
Broiler programmes are short because the bird's life is short. They concentrate on Newcastle disease and Gumboro, with all doses given in the first four weeks so that the bird is protected through the finishing period and nothing is given close to sale.
| Typical age | Vaccine | Usual route |
|---|---|---|
| Day 1 (hatchery) | As given by the hatchery. Ask. | Spray, eye drop or injection |
| About day 7 | Newcastle, mild strain (Hitchner B1), sometimes with infectious bronchitis | Eye drop or drinking water |
| About day 14 | Gumboro, first dose | Drinking water |
| About day 21 | Newcastle, LaSota strain | Drinking water |
| About day 28 | Gumboro, second dose | Drinking water |
You will meet other versions. A pattern also widely used in Ghana starts with Gumboro at about day 7, then Newcastle at about day 14, Gumboro again at about day 21 and LaSota at about day 28. Some vets bring the second Gumboro forward to within a week of the first where the disease is active in the area. None of these is "the correct one" in the abstract. The right order depends on the breeder flock's vaccination history, what the hatchery gave and the Gumboro pressure on your site.
If you keep Ross 308 or Cobb 500 broilers beyond six or seven weeks to reach heavier weights for the Christmas or Easter market, ask the vet whether a further Newcastle booster is needed. Protection from the three-week dose is fading by then.
A layer programme has three phases: the same early protection as a broiler, a series of boosters and additional diseases during rearing, and a final round of injected vaccines before the first egg.
| Typical age | Vaccine | Usual route |
|---|---|---|
| Day 1 (hatchery) | Marek's disease; often Newcastle with infectious bronchitis | Injection; spray or eye drop |
| Week 1 to 2 | Newcastle, mild strain, with infectious bronchitis | Eye drop or water |
| Week 2 to 4 | Gumboro, two doses one to two weeks apart | Water |
| Week 3 to 4 | Newcastle, LaSota | Water |
| Week 6 to 8 | Fowl pox; Newcastle LaSota booster | Wing web; water |
| Week 8 to 12 | Fowl typhoid, fowl cholera or coryza, where the vet advises; infectious bronchitis booster | Injection; water |
| Week 12 to 14 | Newcastle LaSota booster | Water |
| Week 16 to 18 | Killed Newcastle, usually combined with infectious bronchitis and egg drop syndrome | Injection |
| During lay | Live Newcastle booster at intervals the vet sets, often every two to three months | Water |
The killed vaccine at sixteen to eighteen weeks is the one that carries the hen through lay, and its timing has a reason. It needs a few weeks to reach full effect, and catching and injecting hens that are already laying costs eggs and can injure them. So it is done before the pullets move to the laying house or cages, while they are being handled anyway.
Boosters during lay are where programmes differ most. Some vets give a live Newcastle vaccine in the water at fixed intervals. On larger farms the vet may instead take blood samples from twenty or so hens every few months and have antibody levels measured at a laboratory. A flock whose levels are high and even can wait. One whose levels are falling or patchy is boosted at once. If you keep several thousand layers, ask whether this service is available to you, because it replaces guessing with a measurement.
If you buy layer chicks, all of this is your job. If you buy point-of-lay pullets, ask the seller for the written vaccination record, with dates, before you pay. A pullet with no record should be treated as unvaccinated, and a vet should decide what can still be done at that age.
Sasso, Kuroiler, Noiler and white cockerels are often treated like broilers for the first month and then forgotten. They are kept for three to five months or more, frequently on free range where they mix with village birds, so they need continued Newcastle boosters and usually fowl pox, much as a pullet would. Free-ranging birds meet more challenge than housed ones, not less.
Guinea fowl and turkeys also die of Newcastle disease and get fowl pox, and turkeys have diseases of their own. Programmes for them are less standardised than for chickens. If you keep keets or poults, ask the vet for a programme written for that species instead of borrowing the chicken one.
Live Newcastle and bronchitis vaccines multiply in the bird's airways, so a few days after vaccination you may hear light sneezing or "snicking" at night, lasting three or four days. Birds keep eating and drinking, and nobody dies of it. That is the vaccine working. A reaction that is heavy, that lasts more than a week, or that comes with swollen faces, a drop in feed intake or deaths is not normal. It usually means the birds were already carrying a respiratory infection, or the house is dusty and full of ammonia. Call the vet and note it in the record.
A vaccination you cannot prove is a vaccination you will argue about later, with a vet, a buyer or yourself. Keep one page per flock and fill in a line each time:
| What to write | Why |
|---|---|
| Date and age of birds in days | Shows whether the programme was followed |
| Disease and vaccine name (and strain) | "Newcastle" is not enough: HB1 and LaSota are different steps |
| Manufacturer, batch number, expiry date | Needed if a vaccine is suspected of failing |
| Where it was bought and how it was carried | Traces a cold-chain problem |
| Route, number of doses and number of birds | Shows whether birds were under-dosed |
| Who did it, and how long the water took to finish | Shows whether the method was sound |
| Anything seen in the following week | Mild sneezing after Newcastle vaccine is normal; deaths are not |
An easy habit is to photograph the vial label next to a slip of paper with the date and keep the pictures in one album on your phone. When birds fall ill, this page is the first thing a vet will ask for, and it often shortens the diagnosis. It also adds value when you sell pullets. More on farm paperwork is in poultry record keeping.
The time to settle a programme is before the box is opened, not at day six in a queue at the agro-vet shop. Take three facts to your vet or district veterinary office: the type of bird, the hatch date, and what the hatchery has already given. Ask for a written programme with dates, vaccine names and routes, and ask where to buy vaccine that has been kept cold.
Ask what the whole programme will cost as well, and put it in your budget beside feed. Live vaccines are among the cheapest inputs on a poultry farm. As an example only, if a 1,000-dose vial costs GH₵ 60, each bird's dose costs 6 pesewas, and four vaccinations come to about 24 pesewas a bird. Compare that with a broiler chick, which starts from GH₵ 20 at current prices, and the feed it will eat. The injected vaccines for pullets cost more per dose and need labour, but they protect a bird that has taken four to five months of feed to reach the point of lay. Work the sum with the prices your vet shop quotes. It is the same sum whatever the figures: the vaccine is a small fraction of the value it protects.
Then turn ages into calendar dates. Take a Christmas broiler batch collected as day-olds on Monday 2 November. On the example programme above, day 7 falls on Sunday 8 November, day 14 on 15 November, day 21 on 22 November and day 28 on 29 November, with sale from mid-December. Every vaccination day in that batch is a Sunday, when many agro-vet shops are closed. Seeing that three weeks ahead lets you arrange to buy each vaccine on the Saturday and keep it properly cold overnight, or agree with the vet to move the dates by a day, instead of finding out at the shop door.
At Halaal Farms Ghana the hatch date is confirmed before you pay, so you can write the whole calendar out in advance. Call 024 915 1503 or use the order form to ask about the next hatch and the hatchery vaccinations for the breed you want. Advice before and after your order is free, and we would sooner answer a question about timing now than hear about a missed Gumboro dose in week four.
Most broiler programmes in Ghana are built on two diseases: Newcastle disease and Gumboro (infectious bursal disease). A typical pattern gives each of them twice in the first four weeks, by drinking water or eye drop, on top of whatever the hatchery gave on day one. Some vets add infectious bronchitis. The exact days depend on the chicks' maternal antibodies and local disease pressure, so confirm with a vet.
The last major vaccination for pullets is usually an injected killed vaccine at around sixteen to eighteen weeks, a few weeks before the first eggs. It commonly combines Newcastle disease with infectious bronchitis and egg drop syndrome. Giving it before lay means the handling stress does not cost eggs and the hen enters production with high, long-lasting antibody levels. Live Newcastle boosters often continue during lay.
Do not skip it and do not double anything. If you are only a day or two late and the birds are healthy, give the vaccine as soon as you can and move the following dates if your vet advises. If you are more than a few days late, or birds are already showing illness, call a vet before doing anything, because vaccinating a flock that is incubating disease can make matters worse.
They need the same start, Newcastle and Gumboro in the first month, but they live much longer than a six-week broiler, so the programme must continue. That normally means further Newcastle boosters every couple of months and a fowl pox vaccination, as for layer pullets. If the hatchery did not give Marek's vaccine, ask a vet what that means for birds you intend to keep for many months.
Written by the Halaal Farms Ghana team. We hatch and import day-old chicks at Opeikuma, Kasoa, and deliver to all 16 regions. This article is general guidance for farmers. For diagnosis and treatment of sick birds, speak to a vet or your district veterinary office.
A vaccine only works if it reaches the bird alive and in a full dose. This is the practical method: carrying vaccine cold, preparing the water, eye-drop and injection technique, and the mistakes that cause failures.
Newcastle disease can empty an unvaccinated house in a week and has no cure. Learn how it spreads, what the signs look like, why village flocks die each dry season, and exactly what to do if it reaches you.
Gumboro kills fast between three and six weeks of age and leaves survivors with a damaged immune system. Learn the signs, why vaccine timing is tricky, and how to clear the virus from a house.
