bacterial disease Barbary stag

Necrobiosis in Barbary deer (foot rot)

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Definition Signs Causes Diagnosis Treatment Prevention Complications When to see a vet Prognosis FAQ Sources Affected species

What is it?

Necrobiosis, also called foot rot, is a bacterial infection affecting the skin and deep tissues, most often on the feet. In Barbary deer, a subspecies of red deer found mainly in North Africa, this disease can occur both in captivity and in the wild, especially when soil conditions are wet and muddy. It causes painful lesions that can progress to serious damage to the joint or bone if left untreated.

Key point

If left untreated, the condition can progress to severe bone or joint infection, with risk of permanent loss of limb function.

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:

Lameness Hot or painful foot Swelling Pain Fever Reduction Loss of appetite Weight loss Difficulty standing up Non-healing wound Bad ear odour

The most visible sign is lameness, often affecting just one foot at first. The affected area, usually around the hoof or between the hooves, becomes swollen, warm, and tender to the touch.

Sores or areas of dead tissue (necrotic tissue with an unpleasant odour) may appear on the skin surface. The animal may become severely lame, refuse to put weight on the foot, or spend more time lying down than usual.

In advanced cases, general lethargy, loss of appetite, sometimes fever, and progressive weight loss are seen if the animal eats less because of pain.

When to consult without delay

This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.

Causes and risk factors

Necrobiosis is caused by a bacterium called Fusobacterium necrophorum. This bacterium occurs naturally in the environment, particularly in muddy soils, wet areas, and faeces. It takes advantage of a wound, abrasion, or softened skin on the feet to enter the body and trigger infection.

Muddy, wet or faeces-contaminated ground strongly promotes the disease, as it softens the skin on the feet and makes injuries more likely. High stocking density in the same enclosure or area also increases risk, as the ground deteriorates faster.

Rainy periods, muddy water sources, and poorly maintained bedding are aggravating factors. An animal that is weakened, poorly nourished, or already has another wound on the feet is also more vulnerable.

Diagnosis and care

Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.

The veterinarian examines the animal, particularly the affected foot or feet, to assess the extent of the lesions. It may be necessary to restrain or anesthetize the animal, as the Barbary deer is a wild animal that is difficult to handle.

Diagnosis is based on the typical appearance of the lesions (necrosis, odor, location) and can be confirmed by bacterial culture in the laboratory if needed.

Treatment

Treatment consists of careful wound cleaning, removal of dead tissue, and the use of appropriate antibiotics prescribed by the veterinarian. Local care and regular monitoring of healing are often necessary.

In the most severe cases, surgical intervention may be considered to remove deeply affected tissue.

Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.

Prevention

Prevention primarily depends on sound environmental management. It is recommended to limit muddy and stagnant areas, particularly around water points and feeding zones, and to ensure good drainage in enclosures.

Regular cleaning of areas where animals spend time, maintaining a reasonable animal density per enclosure, and regular inspection of the animals' feet allow early detection of lesions before they worsen.

Possible complications

Without treatment, the infection can spread to the tendons, joints, or even bone (osteitis), making recovery much more difficult. In severe cases, the animal may develop a generalized infection that endangers its life, or permanently lose the use of the affected limb.

When to see a veterinarian

The animal limps or refuses to bear weight on a foot.

A foot is swollen, warm, or shows a wound that is not healing.

An unusual odor is present from a skin lesion.

The animal remains lying down abnormally long or refuses to stand.

General signs appear: depression, loss of appetite, weight loss.

Prognosis

The outlook is good if the disease is caught and treated early, with complete recovery possible. However, the longer diagnosis and treatment are delayed, the greater the risk of deep complications affecting bone and joints, which worsens the outlook and can leave permanent damage to the animal's ability to move.

Frequently asked questions

Is the foot rot of the Barbary deer contagious to other animals?

The bacterium responsible comes mainly from the environment (muddy soil, feces) rather than from direct transmission between animals. However, the same unsanitary enclosure can promote the appearance of the disease in several individuals at the same time.

Can this disease be treated without a veterinarian?

No. The lesions may appear superficial at first but can quickly progress to the bone or joint. Only a veterinarian can assess the true severity and prescribe appropriate antibiotic treatment.

How to prevent the disease from reappearing in the pen?

The most effective approach is to improve soil conditions: enhance drainage, avoid muddy stagnant areas, regularly clean around water and feeding points, and avoid overstocking the enclosure with animals.

Does this disease affect only the Barbary deer?

No, necrobacillosis is a disease described in many ungulates (cattle, sheep, cervids in general). It is not specific to the Barbary deer, but the latter is susceptible to it like other cervids.