OMPHALITIS IN POULTRY: CAUSES, CLINICAL SIGNS, PREVENTION, AND EFFECTIVE TREATMENT

Omphalitis in poultry is a common condition in newly hatched birds, which can lead to reduced appetite, lethargy, poor growth, and increased mortality during the first few days post-hatch. The disease is often associated with hatchery conditions, hygiene, and early brooding management. If not properly controlled, it can result in significant economic losses for farmers.
In this article, the Field Technical Department of Fivevet provides essential information on omphalitis in poultry, helping farmers to recognize early signs, understand the underlying causes, and proactively apply effective preventive measures for their flocks. 1. What is omphalitis in poultry?
Omphalitis is an infection of the navel (umbilicus) or yolk sac in newly hatched poultry. The disease commonly occurs in unhygienic environments, which create favorable conditions for opportunistic bacterial infections. Clinical signs include navel inflammation, reduced appetite, lethargy, poor weight gain, and mortality within the first two weeks post-hatch. Antibiotic treatment is often ineffective. Prevention mainly relies on improving hatchery hygiene, overall farm sanitation, and especially proper brooding management.
Omphalitis is characterized by infection of the yolk sac, typically resulting from an unhealed navel in chicks. Poor healing of the navel is often associated with improper temperature or humidity control in incubators, as well as heavy contamination of hatching eggs or hatchery equipment. Chicks may also become infected through contact with other infected individuals that survive within the same hatch batch.
2. Causes of omphalitis in poultry
The primary cause of omphalitis in poultry is the exposure of an unhealed navel to contaminated surfaces. When newly hatched birds are kept in contaminated environments—such as dirty eggshells, contaminated incubator equipment, or hatchers—before the navel has fully closed, bacteria can migrate through the yolk stalk and infect the yolk sac. Infected chicks that survive may act as a source of infection for others within the same hatch. Opportunistic bacteria—including coliforms, Staphylococcus spp., Streptococcus spp., Enterococcus spp., Pseudomonas spp., and Proteus spp.—are commonly involved, and mixed infections are very frequent.
Omphalitis is often associated with poor control of incubation temperature and humidity, and is exacerbated by heavy contamination of hatching eggs, incubators, hatchers, or chick handling trays. Exposure to excessively low or high temperatures during transport or early brooding can further increase mortality. Infections with Escherichia coli and Enterococcus faecalis account for approximately half of the deaths caused by omphalitis during the first week post-hatch.
3. Clinical signs of omphalitis in poultry
In poultry affected by omphalitis, the navel is inflamed and may fail to close properly. Clinical examination typically reveals a moist area on the abdomen, sometimes with a dark scab, and a firm abdomen due to unabsorbed yolk sac.
Affected birds are usually lethargic and anorexic, with drooping heads and a tendency to huddle near heat sources. They exhibit poor weight gain, and mortality increases from hatch up to two weeks of age. In chicks or poults, individuals may appear normal until a few hours before death. Mortality rates can reach up to 15% in chickens and 50% in turkeys.
4. Lesions of omphalitis in poultry
Affected chicks are often dehydrated and have unabsorbed yolk material within the abdominal cavity. The yolk sac may appear congested, emit a foul odor, and contain coagulated yolk contents. Peritonitis may also be present and can become extensive. 5. Prevention and treatment of omphalitis in poultry
Currently, there is no specific treatment for omphalitis in poultry. The use of antibiotics depends on the causative bacteria; however, treatment is often ineffective. Severely affected chicks usually die, while mildly affected ones rarely show significant improvement even with antibiotic therapy.
a. Incubator management
Omphalitis can be prevented through proper control of temperature, humidity, and hygiene in the incubator, following standard hatchery management procedures. Only clean, intact eggs should be set for incubation. If dirty eggs must be incubated, they should be separated from clean eggs and placed at the bottom of the incubator.
If egg washing is necessary, appropriate disinfectant detergents must be used according to guidelines. Factors such as washing time, water temperature, and frequent water replacement are as important as the disinfectant concentration in both washing and rinsing water.
The incubator must be thoroughly cleaned and disinfected between hatches. Use one of the following disinfectants: Five-BGF, Five-B.K.G, Five-Iodine, Five-Perkon 3S, …. However, equipment can easily be re-contaminated from the environment; therefore, both the machines and the hatchery rooms must be regularly cleaned and disinfected.
Periodic fumigation using formaldehyde and potassium permanganate can be applied for incubators, hatchers, and related equipment, following the standard fumigation formula: 17.5 g potassium permanganate + 35 ml formalin per m³ of incubator volume for 1 hour. After fumigation, the incubator should be ventilated thoroughly to remove chemical residues, then operated until the required incubation temperature is reached. b. Housing hygiene
- Thoroughly clean and disinfect poultry houses, equipment, and bedding before placing day-old chicks, minimizing adverse exposure during the first day.
- Keep the house clean; spray disinfectants on the house and equipment using one of the following: Five-BGF, Five-B.K.G, Five-Iodine, Five-Perkon 3S,… combined with one of the following insecticides: Five-Tox 250, Five-Permethrin, Five-Cymethrin,…
c. Brooding management
- Apply a strict brooding program to prevent navel infections in young poultry.
- Ensure proper temperature, humidity, and ventilation; control harmful gases in the house.
- Provide adequate feed and clean water according to the age and technical requirements of each poultry breed. - Use one of the following products for poultry during the first 1–3 days after placement: Five-Ampicon super, Five-Amoxcin super, Five-Gentoxcin, Five-AC.15,… in combination with one of the following: Five-Aminovit super, Five-Vitamin B1,… Helps prevent navel infection, promotes rapid yolk absorption, and ensures a healthy start for young poultry.
- Navel inflammation in poultry is a common disease in young birds, closely related to hatching conditions, hygiene, and early-stage management. Early detection of symptoms, proper control of temperature and humidity, and good sanitation of hatchers and housing can significantly reduce disease incidence and mortality in young flocks.
Compiled by: Field Technical Department – Central Veterinary Medicine Joint Stock Company No. 5 (Fivevet).
Reference: merckvetmanual.com
FREQUENTLY ASKED QUESTIONS:
1. When does navel inflammation in poultry usually occur?
The disease commonly occurs in young poultry during the first few days after hatching, especially within the first two weeks of life.
2. What are the main causes of navel inflammation in poultry?
It is often associated with unhealed navels, improper incubation conditions, poor hygiene, or invasion of opportunistic bacteria.
3. Is navel inflammation in poultry contagious?
Infected chicks that survive can become a source of infection for others in the same batch, especially under poor hygiene conditions.
4. How can navel inflammation in poultry be effectively prevented?
Farmers should properly control temperature and humidity in incubators, maintain good hygiene, perform regular disinfection, and apply proper brooding management practices.
5. Does navel inflammation cause economic losses?
Yes. The disease can lead to poor growth, increased mortality, reduced flock quality, and significant economic losses for farmers.