A Simple Poultry Post-Mortem Guide

Why we ask farmers to open the bird before it goes in the pit

Most farmers never look inside a dead chicken. The bird goes into a sack, then into a hole behind the house, and the next bird dies the same way three days later. We understand the reluctance. Nobody enjoys it, and the smell can be bad in the afternoon heat.

But a dead bird is the cheapest information you will ever get on your farm. A five-minute look at the organs can tell you whether you are dealing with a feed problem, a water problem, a heat problem, or an infection that is moving through the flock. Your vet cannot see the bird you buried. Often the most useful thing you can give them is a clear description of the first bird you opened, plus a photo.

At our hatchery in Kasoa, the first question we ask a farmer who calls about deaths in a batch is simple: did you open one? If the answer is no, we ask them to try it next time, with the steps below.

This guide covers what a farmer can safely look at, in a fixed order, and what to do with what they see. It does not replace a vet. It makes the vet's first visit more useful, and it tells you when to stop poking around and make a call.

Before you touch the bird: gloves, place and timing

The important decisions come before the knife. Pick the place, the time and the gear, because a careless post-mortem is one of the easiest ways to spread disease from a flock to your own family.

• Use a fresh bird. A carcass that has been dead for a day or more changes quickly in the heat, and the organs break down before you can read them. If you cannot open it within a few hours, chill it in a sealed bag.
• Work outdoors, on a clean sheet of plastic or an old feed sack, well away from the feed store, the drinkers and the house. Never on the kitchen table.
• Wear disposable or rubber gloves, old overalls and closed shoes you can wash or leave at the door. Keep a bucket of disinfectant within reach.
• Keep children and dogs out of the area. A dog will carry a piece of carcass back to the house before you have finished.
• Do not open a bird if you have cuts on your hands that you cannot cover, or if you feel unwell.

Bird flu can pass to people, so there is one rule that overrides everything else. If many birds are dying suddenly, or the bird has a swollen head, a blue or purple comb, or bleeding from the body openings, do not open it yourself. Call your vet first. We come back to this in the section on when to stop.

Look at the bird in the same order every time

A post-mortem is only useful if you can compare it with the last one. Go through the same steps each time and write the answers down. Your notes matter more than your memory, and they are the first thing your vet will ask for.

1. Outside first. Note the age, the weight if you can judge it, and the state of the feathers, comb, eyes, nostrils and feet. Look for swelling, discharge, scabs and wounds.
2. The body cavity. Lay the bird on its back and cut through the skin and the thin muscle of the breastbone and belly with clean scissors. Open the flaps. Smell the cavity and look at the colour of the fluid before you touch any organ.
3. The air sacs. These are thin, clear membranes around the organs. Note whether they are clear, cloudy, thickened or cheesy.
4. Heart, liver and spleen. Check the sac around the heart, the colour and size of the liver, and the spleen.
5. Windpipe and lungs. Open the windpipe lengthways with scissors and look for blood, mucus or a plug. Press the lungs and check for grey, yellow or hard nodules.
6. Gut. Look at the outside first, then open the intestine lengthways and check the lining for bleeding, patches and what is inside.
7. Kidneys and reproductive organs. Look at size, colour and any white chalky deposits. In hens, check the ovary and the egg tube for yolk, or for eggs that have broken inside the body.

Take a photo at each step if you can. A phone photo with a coin or a ruler beside the organ shows your vet the size of a lesion, which a description rarely does well.

The liver, the heart and the air sacs tell most of the story

When farmers ask what a post-mortem can show, we start with these three. They are easy to see, and they change early.

A liver that is enlarged, bronze, greenish or covered in pinpoint spots is a serious sign and worth a call. Spots like these are areas of dead tissue, and several different infections produce them, so the spots alone do not name the disease. A thin white or cream film over the liver and the heart, something like plastic wrap, is often seen with some bacterial infections. A bird with that picture needs a vet, not a guess from the shop.

The sac around the heart should be clear and thin. If it is thickened, cloudy or full of fluid, the heart may be struggling. Fluid in the belly is a different sign, and it is often linked to fast growth, heat or poor oxygen. We cover it in our article on water belly in broilers.

The air sacs are where many farmers miss something. Cloudy, thick or yellowish air sacs point to respiratory trouble, often a bacterial infection that has moved in on top of a virus or a stress. A hard grey or yellow lump on the lung or in the air sac is a different story. It often points to a mould problem from wet litter or mouldy feed. Our article on aspergillosis in chicks goes into that in more detail.

Gut, kidneys and the bursa: the next layer of clues

The gut is where a post-mortem gets busy, and it is also where farmers misread things most often. Work slowly. Open the intestine lengthways and lay it flat on the sheet before you look at the lining.

• Pinpoint bleeding in the gut lining can come with several diseases, including Newcastle disease and some parasites. Count how many birds show it. One bird is a note. Many birds is a call.
• Yellow or brown membranes or patches in the small intestine often point to necrotic enteritis. We explain the signs and the prevention in our article on necrotic enteritis.
• Dark, bloody cores in the caeca, the two small pouches where the small and large gut meet, are a classic sign of coccidiosis. Open them and look.
• An empty, dry gut with no feed in it usually means the bird had stopped eating for a while. The question then is why it stopped, and that is where the rest of the post-mortem comes in.

The bursa of Fabricius is a small pouch near the back end of the bird. It is part of the immune system in young birds. In an acute Gumboro infection it can be swollen, yellow and jelly-like, with bleeding inside. If you see that in birds of about three to six weeks old, think of Gumboro first and speak to your vet quickly. Our Gumboro guide goes through the signs in order.

The kidneys should be firm, dark red and a normal size. Swollen, pale kidneys, sometimes with white chalky urate deposits along the tubes that carry urine, appear in many illnesses and in dehydration. On their own they do not name a disease. They tell you the bird had been ill for a while and that its kidneys were working hard.

The windpipe, the head and the marks you can see from outside

Some clues are on the outside and in the top half of the bird. Look at these before you open anything, because they are easy to miss once the bird is lying on the sheet with its insides showing.

Swelling around the eyes and under the head, with discharge from the nostrils, is typical of a respiratory or sinus problem and sometimes a flock-wide one. Our article on coryza and swollen head covers the signs in live birds. Inside, open the windpipe from the top and look for frothy mucus, blood or a yellow plug. Blood in the windpipe is a reason to call your vet the same day, because several serious diseases look like that at this stage.

In very young birds, the navel is the other place to look. It should be clean and dry and closed. A swollen, dark or wet navel usually means infection came in through the navel in the first days of life, often from dirty eggs, a dirty hatcher or dirty litter. Our article on navel infection in chicks has the detail.

A table for matching what you see to where it points

Use this table as a memory aid, not a diagnosis. Each row lists something you may see, what it can point to, and what to do next. Two or more birds with the same change matter far more than any single finding.

When to stop the post-mortem and call the vet

There are times when the right answer is to finish the outside check, close the bag and phone. Do not carry on with the dissection just to be thorough.

• Deaths are sudden, and more than one bird has died in a day.
• You see a swollen head, a blue or purple comb, bleeding from the body openings, or a sudden drop in egg production together with dead birds.
• The deaths are moving to the next house, or to birds that were healthy the day before.
• You suspect a poisoning, or a feed, water or chemical problem, and you cannot say which.
• You have a cut, a fever or a rash after handling birds.

In those cases, keep the living birds apart from the dead ones, leave the carcass in a sealed bag or a clean container, and phone your vet or the district veterinary office. Do not sell, give away or eat any bird from the flock until your vet has seen it. Our article on bird flu in Ghana explains why speed matters with some diseases.

Sending a bird to the lab, and how to pack it

A farm post-mortem gives you direction. A lab gives you proof. Send a bird when the pattern is clear and your vet asks for it, when deaths continue after the usual care, or when you need to know whether a flock disease is present before you move birds or restock.

1. Phone the lab or your vet first. Ask how they want the bird packed, and whether they want it fresh, chilled or frozen. Do not assume.
2. Choose a bird that died recently and is still in reasonable condition. A bird that your vet examines while it is still alive is often more useful than one that has been in the sun.
3. Put the bird in a leak-proof bag, then in a box with ice packs that do not touch the carcass directly.
4. Write a label with the age of the birds, the number affected, the date of the first death, the feed brand and any feed change, the water source, and the vaccines the flock has had.
5. Send it the same day if you can. A bird that sits for three days in a hot vehicle is no use to anyone.

The batch record matters here. If the flock came from us, the batch record lists what was vaccinated at the hatchery and when. Your vet can use it to tell a gap in vaccination from something else. Keep the paper with the bird's box and send a copy with the sample.

If the flock came from us and you want to talk it through, message us on WhatsApp at +233 24 915 1503 with the batch record and the photos. We cannot make the diagnosis for you, but we can help you read the record and decide what to ask your vet.

Clean-up, disposal and the tools

The post-mortem is finished when the sheet is folded, the tools are clean and the carcass is in the ground or the fire. Many farms skip the last part, and then the next bird finds the same problem.

Dispose of the carcass by deep burial or burning, following your local rules, and well away from wells, drains, the house and the dogs. Shallow holes get dug up by dogs and rats, sometimes within a day. Pour disinfectant on the spot afterwards and cover it.

Wash the scissors and knife in hot soapy water, then in disinfectant, and let them dry. Wipe the table or the box lid with disinfectant. Fold the plastic or the sack with the dirty side inside and dispose of it with the carcass. Throw away disposable gloves. Wash rubber gloves inside and out, and wash your overalls separately from the family clothes. Wash your hands with soap up to the wrists before you touch food, the feeder or a child.

Plan the routine before you start. Knowing where the bucket, the bags and the water are makes the job quicker and safer. The wider habits are in our article on disinfectants and footbaths.

Keep a short record of every post-mortem

A single post-mortem is a guess. Five post-mortems in a year, on the same kind of flock, are a pattern you can act on. Keep one short page in the record book for each one.

• Date, house, flock age and the number of birds in the house.
• Number dead so far and the date the first death happened.
• What you saw, organ by organ, in plain words.
• What you changed that week: feed, water, litter, temperature or vaccination.
• What your vet said, and what the lab found once you know it.

In our experience, the farms that learn from problems are the ones that write them down. The farms that repeat the same loss usually have no notes at all. A simple page you can copy is in our article on poultry record keeping.

When the flock is finished and you are ready to restock, the breed pages compare the options, and the day-old chicks page shows what we supply. Start the next batch with the notes from the last one in front of you.

Questions farmers ask