Gumboro Disease in Poultry: Prevention and Control

Gumboro disease — properly called infectious bursal disease (IBD) — is one of the most feared diseases in broiler production, not because it kills on its own, but because it destroys the bird's immune system and opens the door to everything else. It's a disease where prevention is everything.

1. What Gumboro does

The virus attacks the bursa of Fabricius, a small organ in young chickens that produces the immune cells they need to fight disease. Once the bursa is damaged, the bird can't mount a defence — so it dies from Gumboro itself, or from the infections that follow because its immunity is gone.

2. When and where it strikes

Gumboro mainly hits birds aged two to six weeks — exactly the brooding-to-grower window. It spreads through droppings, contaminated litter (the bedding on the floor), equipment, feed and even dust. The virus is extremely tough and survives a long time in the environment, which is why a farm that has had Gumboro keeps fighting it unless cleaning is thorough.

3. Symptoms

• Sudden depression and ruffled feathers
• Watery or whitish diarrhoea
• Birds pecking at their own vent (bottom)
• Many birds dying suddenly around three to six weeks
• Dehydration and huddling

4. Treatment

There is no cure — Gumboro is viral. Supportive care (warmth, clean water and electrolytes — mineral salts that help the body work) helps survivors, but the real answer is prevention. If you suspect Gumboro, confirm with a vet and review your vaccination and biosecurity (steps to keep disease off your farm) immediately.

5. Prevention — the whole game

• Vaccinate on schedule — Gumboro vaccination is standard in the hatchery programme for broilers; never skip or delay it.
• All-in, all-out — don't keep running different ages on the same site.
• Clean and disinfect thoroughly between flocks — the virus survives ordinary washing.
• Biosecurity — control visitors, vehicles and equipment (see our poultry biosecurity guide).

For the broader picture of spotting trouble early, see the symptoms of a sick chicken, and if droppings have turned white, check white diarrhoea in poultry.