Pullorum Disease in Turkeys: Salmonella pullorum in Poults
- See your vet immediately if young poults are weak, huddling under heat, or developing white droppings pasted around the vent.
- Pullorum disease is caused by Salmonella enterica serovar Gallinarum biovar Pullorum and spreads through infected eggs, hatchery contamination, and contact with infected birds or contaminated litter, feed, and water.
- Young turkeys can decline fast, with very high mortality in the first 2 to 3 weeks after hatch.
- Testing usually involves flock history, necropsy of fresh losses, and lab confirmation with culture and organism identification. Serology may be used for surveillance in older birds.
- Treatment is not usually aimed at curing and keeping birds in the flock. Control focuses on isolation, testing, biosecurity, and often culling infected or exposed birds under your vet's guidance.
What Is Pullorum Disease in Turkeys?
Pullorum disease is a serious bacterial disease of poultry caused by Salmonella enterica serovar Gallinarum biovar Pullorum. In turkeys, it is most concerning in very young poults, especially during the first 2 to 3 weeks after hatch. These birds can become weak, stop eating, huddle near the heat source, and develop pale or white droppings that stick to the vent.
This disease is best known for causing high early mortality. Some birds die suddenly with few warning signs. Others survive but may remain infected carriers, which matters because carrier breeder birds can pass infection through eggs to the next generation.
In the United States, pullorum disease has been largely eliminated from commercial breeding stock through the National Poultry Improvement Plan, but it can still appear in small flocks, mixed-species settings, exhibition birds, or birds from uncertain hatchery sources. If you raise poults at home or on a small farm, fast veterinary involvement is important because this is both a flock health and biosecurity problem.
Symptoms of Pullorum Disease in Turkeys
- Huddling under the heat source
- Weakness and lethargy
- Poor appetite or failure to start eating
- White or pale diarrhea pasted around the vent
- Slow growth or small size in survivors
- Breathing changes
- Swollen joints or lameness
- Sudden death in young poults
See your vet immediately if multiple poults are weak, dying, or showing pasted vents. Pullorum disease can move through a group fast, and young birds dehydrate quickly. Freshly dead birds are often the most useful for diagnosis, so call your vet before disposing of them.
These signs are not unique to pullorum disease. Other infections, brooding problems, dehydration, and hatchery-related illness can look similar. That is why lab confirmation matters before making flock decisions.
What Causes Pullorum Disease in Turkeys?
Pullorum disease is caused by Salmonella Pullorum, a poultry-adapted salmonella organism. The most important route is vertical transmission, meaning an infected breeder bird passes the bacteria into the egg. That is why hatchery source matters so much.
It can also spread horizontally after hatch. Poults may be exposed through droppings, contaminated incubators or hatch trays, dirty feeders or waterers, litter, transport boxes, or contact with infected birds. Mixed flocks and poor sanitation increase risk.
Carrier birds are a major problem. Adults may look normal but still shed bacteria or pass infection through eggs. Stress, crowding, poor brooding temperatures, and weak biosecurity can make an outbreak more likely or more severe. If you have brought in new birds, bought hatching eggs from an unknown source, or share equipment between groups, tell your vet right away.
How Is Pullorum Disease in Turkeys Diagnosed?
Diagnosis starts with the story: the age of the poults, recent hatch or shipping history, losses in the first days to weeks of life, and signs like weakness and white vent pasting. Your vet may recommend examining sick birds and performing necropsy on freshly dead poults. Typical lesions can include unabsorbed yolk sacs, white-gray nodules in organs, and cecal cores, but these findings are suggestive rather than definitive.
A confirmed diagnosis usually requires laboratory isolation and identification of the organism from tissues, yolk sac material, feces, or environmental samples. In older birds, serologic testing may be used as a surveillance tool to identify reactors, but positive or negative screening tests still need careful interpretation and follow-up confirmation.
Because pullorum disease has flock-level consequences, your vet may also discuss state poultry officials, NPIP-related testing pathways, and movement restrictions. In practical terms, many pet parents and small flock keepers can expect a cost range around $75 to $200 for an exam or basic flock consultation, $10 to $70 per bird for necropsy or screening at a diagnostic lab, and roughly $25 to $80+ for salmonella culture or PCR-based testing, depending on the lab and sample type.
Treatment Options for Pullorum Disease in Turkeys
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Urgent flock consultation with your vet
- Immediate isolation of sick poults
- Heat, hydration, easy access to feed, and supportive nursing care
- Submission of 1-2 fresh losses or samples to a diagnostic lab
- Basic sanitation steps: separate boots, tools, feeders, and waterers
Recommended Standard Treatment
- Full veterinary flock assessment
- Necropsy and confirmatory culture or organism identification
- Serologic screening or additional testing of exposed birds when appropriate
- Strict quarantine and enhanced cleaning/disinfection plan
- Removal or humane culling of confirmed or strongly suspected infected birds under veterinary guidance
- Review of hatchery source, egg handling, and biosecurity gaps
Advanced / Critical Care
- Comprehensive flock outbreak workup with your vet and diagnostic laboratory
- Expanded culture, PCR, serology, and environmental sampling
- On-farm biosecurity redesign and written outbreak containment plan
- Brooder, hatchery, and breeder-source investigation
- Large-scale depopulation or test-and-remove planning when indicated
- Coordination with state poultry health officials or NPIP pathways when movement, exhibition, or breeding status is affected
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Pullorum Disease in Turkeys
Bring these questions to your vet appointment to get the most out of your visit.
- Do my poults' signs fit pullorum disease, or are there other likely causes we should test for first?
- Which birds or fresh losses should I submit for the most useful diagnostic results?
- Should we culture tissues, run PCR, use serology, or combine tests in this flock?
- Do any surviving birds need to be considered possible carriers?
- Should I stop moving birds, eggs, or equipment on and off the property right now?
- What cleaning and disinfection steps matter most for brooders, feeders, waterers, and hatch equipment?
- If I bought poults or hatching eggs recently, what should I tell the hatchery or seller?
- What is the most practical plan for this flock based on my goals, budget, and whether these birds are breeders or pets?
How to Prevent Pullorum Disease in Turkeys
Prevention starts with source control. Buy poults, hatching eggs, and breeding birds from reputable suppliers participating in recognized testing programs such as NPIP. Avoid mixing birds from swaps, auctions, fairs, and unknown backyard sources directly into your flock.
Use strong biosecurity every day. Keep brooders clean and dry, wash and disinfect feeders and waterers, control traffic between age groups, and do not share equipment unless it has been cleaned and disinfected first. Quarantine new arrivals before they join the flock, and keep turkeys separated from other poultry when possible.
If you hatch your own birds, sanitation in the incubator and hatch area matters. Carrier adults can pass infection through eggs, so breeder testing and flock history are important. If your flock has had unexplained early poult deaths, poor hatch results, or repeated pasted-vent illness, ask your vet whether flock testing is appropriate before the next breeding season.
Because pullorum disease control relies on finding and removing infection rather than treating around it, early reporting is part of prevention. Fast veterinary guidance can protect the rest of the flock and reduce the chance of carrying the organism into future hatches.