FOWL CHOLERA (PASTEURELLOSIS IN POULTRY): SIGNS, CAUSES, AND EFFECTIVE TREATMENT
Fowl cholera is one of the dangerous infectious diseases commonly found in chickens, ducks, geese, and many other waterfowl species.
The disease spreads rapidly, causes high mortality rates, and leads to significant production losses in poultry farming if it is not detected and controlled in time.
So what causes fowl cholera in poultry? How can it be recognized early and effectively treated? Let’s explore the details below.
What is fowl cholera in poultry?
Fowl cholera is a disease caused by the bacterium Pasteurella multocida. This bacterium can survive in the farming environment, drinking water, feed, or in carrier animals.
When weather conditions change suddenly, the animals’ immunity weakens, or the housing environment is not hygienic, the bacteria can multiply rapidly and spread widely.
The disease can occur at any age but is more common in adult poultry and in high-density flocks.
Causes of fowl cholera in poultry
Many factors can increase the risk of outbreaks, including:
- Damp, poorly sanitized housing conditions
- Overcrowding in poultry houses
- Sudden weather changes, especially during the rainy season or seasonal transitions
- Contaminated feed or drinking water
- Stress caused by transportation or environmental changes
- Incomplete vaccination programs
These conditions create an ideal environment for bacteria to grow and spread quickly within the flock.
Signs of fowl cholera in poultry
Depending on disease severity, poultry may show different symptoms.
Peracute form
This is the most dangerous form.
Poultry may:
- Die suddenly without clear symptoms
- In some cases, show high fever before death
Acute form
Common signs include:
- Loss of appetite, lethargy
- High fever (42–43°C)
- Difficulty breathing, rapid breathing
- Nasal discharge
- Bluish/purple comb and wattles
- Green or light yellow diarrhea
- Death within 1–3 days if untreated
Chronic form
In chronic cases, poultry may show:
- Joint inflammation, difficulty walking
- Swelling of the head and face
- Nasal sinus inflammation
- Slow growth, reduced egg production
Typical lesions (post-mortem findings)
When examining birds that died from fowl cholera, the following lesions may be observed:
- Enlarged liver with white-gray necrotic spots
- Hemorrhages in the heart and myocardium
- Congested lungs
- Abnormally enlarged spleen
- Multiple hemorrhagic spots in abdominal fat
These lesions are important for supporting diagnosis.
How fowl cholera spreads
Pasteurella multocida can be transmitted through:
- Direct contact with infected birds
- Contaminated feed and drinking water
- Unclean farming equipment
- Wild birds and rodents
- Farm workers moving between areas without biosecurity measures
Due to its rapid spread, early detection and prompt action are very important.
Effective treatment of fowl cholera
As soon as suspected cases are detected, the following measures should be implemented:
Isolate infected birds
Separate sick birds from the healthy flock to prevent further spread.
Use appropriate medications
Depending on the condition and veterinary guidance, treatment products may include:
- SULTRIM INJ
- FLOVET ORAL
- CEFAXIM NEW
These products help control bacterial infections caused by susceptible organisms, including fowl cholera.
Supplement vitamins and electrolytes
In addition to treating the cause, it is important to support the birds’ immune system during recovery.
- Vitamin C (15%) helps reduce stress, boost immunity, and support recovery
- Gluco K.C Electrolytes with Ginseng helps replenish electrolytes, provide energy, and prevent dehydration
These supplements help poultry recover faster, regain appetite, and improve treatment effectiveness.
Disinfect the environment
Thoroughly clean and disinfect:
- Poultry houses
- Walkways
- Feeders
- Drinkers
- Waste disposal areas
This helps reduce environmental pathogen load.
Prevention measures for fowl cholera
Prevention is always more effective and cost-efficient than treatment.
Regular vaccination
Proper vaccination schedules help build active immunity and reduce outbreak risks.
Biosecurity practices
- Restrict visitors to poultry areas
- Disinfect vehicles and equipment regularly
- Quarantine newly introduced birds before mixing with the flock
Ensure proper nutrition
A balanced diet helps poultry grow healthily and increases disease resistance.
Regular sanitation
- Remove manure frequently
- Keep bedding dry
- Control insects and disease vectors
Economic losses caused by fowl cholera
If not controlled promptly, fowl cholera can cause:
- High mortality rates in the flock
- Reduced growth performance
- Lower egg production
- Increased medication and labor costs
- Significant impact on farm profitability
For large-scale farms, losses can reach tens or even hundreds of millions of VND within a single outbreak.
Fowl cholera is a highly contagious disease that spreads rapidly and causes serious economic damage to poultry farmers.
Early recognition of symptoms, proper isolation and treatment, and effective prevention programs are essential to protect poultry flocks from outbreaks.
In addition, combining treatment solutions with biosecure farming practices helps improve productivity and minimize disease risks on farms.
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