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Calf omphalitis
Omphalitis is the infection of the navel of the newborn calf. At birth, the umbilical cord leaves an open wound connected directly to the vessels that lead to the liver and bladder. This wound is an ideal entry point for litter bacteria. Th...
What is it?
Omphalitis is the infection of the navel of the newborn calf. At birth, the umbilical cord leaves an open wound connected directly to the vessels that lead to the liver and bladder.
This wound is an ideal entry point for litter bacteria. The infection can remain local, or move up to the liver, bladder and blood.
It is one of the most preventable calf conditions: disinfection of the navel at birth and a clean calving floor are enough to prevent most of them.
Key point
An infected belly button is never a purely local problem. The umbilical vessels lead directly to the liver and the bladder: this is what makes this seemingly banal condition so often serious.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Related signs — each one links to its page:
Navel large, hard, hot, painful when palpated: the calf retracts or moans.
Discharge of pus or foul-smelling fluid from the navel.
The cord remains damp and does not dry out after a few days.
Fever, depression, loss of appetite, calf sucking sluggishly.
Round back, stiff gait, calf reluctant to lie down or get up.
In forms that become complicated: one or more swollen and painful joints, lameness.
Weight loss and growth retardation in calves whose infection persists.
A soft, non-painful and non-hot navel, which shrinks under pressure, rather suggests an umbilical hernia: this is a different problem, which should be examined without urgency.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
Environmental bacteria — numerous in soiled bedding — enter through the umbilical wound in the hours and days following birth.
They can remain in the tissues around the navel (local abscess) or move up along the umbilical vessels towards the liver or bladder.
A calf poorly equipped with colostral antibodies is much more exposed: its defenses do not block the progression of the infection.
A section of the cord that is too short or rough handling at birth increases the risk.
Calving on soiled, damp bedding or muddy ground.
Absence of disinfection of the navel at birth.
Failure to take colostrum.
Reused calving box without cleaning between two cows.
Difficult calving requiring intervention, with a weakened calf.
Housing newborns in a room shared with older animals.
Cutting or ligation of the cord in poor hygienic conditions.
Transmission
It is not a disease that is contagious from one calf to another: each calf becomes contaminated from its environment.
Calving floor, damp bedding, soiled bedding areas are the usual sources.
The farmer's hands and equipment can carry bacteria during calving assistance.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The veterinarian carefully palpates the navel, with the calf lying on its back, to distinguish a simple local infection from a hernia and to feel if a hard cord is going up towards the liver or bladder.
He takes the temperature and examines the joints, which are the most common complication.
Ultrasound of the umbilical region is very useful: it shows the extent of the infection in depth, which palpation does not always allow.
A blood test can objectify the infection and assess the transfer of colostral immunity.
A pus sample can identify the bacteria and guide the choice of antibiotic.
Treatment
An infection caught early is treated with an antibiotic prescribed by the veterinarian, generally combined with an anti-inflammatory and local care of the navel.
The duration of treatment is long compared to other infections: the navel is a poorly irrigated tissue and relapses after a shortened treatment are common.
Local care – cleaning, antiseptic recommended by the veterinarian – accompany the general treatment but never replace it.
A formed abscess or an infection going back to the liver or bladder requires surgery: the veterinarian removes the infected tissues. This intervention gives good results when it is decided in time.
The calf must be placed on clean, dry bedding, which is part of the treatment.
Do not pull or cut an infected cord yourself: the action can push the infection towards the abdomen.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
Disinfect the navel from birth with a suitable product recommended by the veterinarian, and repeat the application according to his instructions as long as the cord is not dry.
Calve on clean, dry and abundant bedding, in a cleaned box between two cows.
Give quality colostrum as early as possible: a calf well equipped with antibodies resists infection much better.
Wash hands and use clean equipment when assisting with calving.
Do not cut the cord too short or tie it unnecessarily; letting it dry naturally is best.
Check the navel of each calf during the first days: a simple glance and a quick palpation allow early intervention.
Place newborns in a room reserved for them, dry and clean.
Possible complications
Arthritis: bacteria spread to the joints, causing swelling, pain and sometimes permanent lameness.
Abscess of the liver, from the rise of the infection through the umbilical vessels.
Infection of the bladder and urinary tract, with abnormal urine output.
Sepsis: spread of bacteria throughout the body, fatal without rapid treatment.
Deep abscess requiring surgery.
Long-term growth retardation in calves whose infection has dragged on.
When to see a veterinarian
Your calf's belly button is large, warm, or painful to the touch.
Pus or a foul-smelling liquid comes out.
The cord remains damp and does not dry out after a few days.
The calf has a fever, is suckling sluggishly or appears depressed.
He limps or a joint is swollen: the infection has already spread, call immediately.
A soft, painless swelling persists after healing: have it examined, it may be a hernia.
Prognosis
A local infection treated within the first few days usually heals well.
The prognosis deteriorates as soon as the infection moves towards the liver or bladder, or reaches the joints: treatment becomes long and surgery is often necessary.
A calf with arthritis frequently remains lame and has reduced growth.
Almost all of these cases can be avoided by disinfecting the navel and keeping calving clean.
Frequently asked questions
How to distinguish an infected navel from a hernia?
An infected belly button is hot, hard and painful, often accompanied by fever or discharge. A hernia forms a soft, painless ball, which can be reduced by pressure and which does not cause any general signs. Only the veterinarian can decide with certainty, by palpation and sometimes by ultrasound.
Should the navel of all calves be disinfected?
Yes. It is a quick and inexpensive procedure that prevents a large number of umbilical infections, arthritis and liver abscesses. It is done from birth, with a product recommended by the veterinarian.
Can I pierce the abscess myself?
No. The navel communicates with vessels which plunge into the abdomen: a poorly done gesture can spread the infection inside. This intervention is done by the veterinarian, in good conditions.
My calf is lame after having a big belly button, is this related?
Most likely. Bacteria from the navel readily lodge in the joints. This is a serious complication that requires rapid consultation.
References
WOAH — Organisation mondiale de la santé animale (ex-OIE)
ANSES — Agence nationale de sécurité sanitaire (France)
Content reviewed by the TunisieVet editorial team · Updated 09 August 2026
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