In poultry farming, Gumboro disease is one of the biggest nightmares for farmers. This disease not only causes direct losses to the flock but also has a long-term impact on immunity, making chickens more susceptible to many other infectious diseases. Vemedim will share information to help farmers gain a comprehensive understanding of the disease mechanism, early warning signs, and how to implement an effective prevention and control program to protect the flock.
What is Gumboro disease?
Gumboro disease, also known as Infectious Bursal Disease (IBD), is an acute infectious disease caused by a virus belonging to the Birnaviridae family. This virus has a special affinity for the chicken immune system, especially the Fabricius bursa - the organ that produces immune cells in young chickens.
When attacked by the virus, the Fabricius bursa swells, becomes severely inflamed, then quickly atrophies and loses its ability to produce antibodies. This causes the chicken’s immune system to become severely weakened, creating favorable conditions for other diseases such as Newcastle disease, E. coli, or CRD to attack more easily. The disease can occur in all chicken breeds, most commonly at 3-6 weeks of age, with infection rates reaching up to 100% and mortality rates ranging from 20-60% depending on care conditions and secondary infections.
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Transmission routes
This is a highly contagious disease because the Gumboro virus can survive for a long time in the environment. In poultry houses, the virus can survive for months, even lingering in feces, feed, drinking water, or dust in the coop.
The disease spreads directly when healthy chickens come into contact with sick chickens, or indirectly through intermediate factors such as farming equipment, clothing, footwear, transport vehicles, and even from hen to chick through eggs. Once the virus enters the body, it rapidly multiplies in the immune cells of the intestines and liver, then spreads throughout the body, destroying the chicken’s natural defense system.
Symptoms of Gumboro disease
Chickens infected with Gumboro disease usually show very clear signs just 2-3 days after being infected with the virus. Specifically:
- At first, chickens become lethargic, ruffled, eat less, and gather in small groups. Some birds may show abnormal behavior such as running and jumping around, trembling, or pecking at each other’s vents.
- As the disease progresses, chickens often develop severe diarrhea, with loose white or yellow-brown stools that stick around the vent. Body weight drops rapidly, gait becomes unsteady, and they tremble and appear sluggish.
- In broilers, the disease often breaks out at 20-40 days of age, while in pullets or laying hens, it usually appears between 30-80 days of age.
- If there is a secondary infection, mortality can rise to 50-60%, a figure that causes heavy losses for many farms.
Treatment regimen and prevention of Gumboro disease
Currently, there is no specific treatment for Gumboro disease because the virus is not destroyed by antibiotics. However, if detected early and handled promptly, farmers can still reduce mortality and limit losses. The goal of the regimen is to help chickens stabilize their health, reduce dehydration and stress, so the immune system can recover on its own. The steps to take are:
- Immediately isolate sick chickens from the healthy flock.
- Disinfect the entire coop; it is recommended to use Vemedim BKC (GSGC).
- Inject Gumboro antibodies into the whole flock - 2 doses 3 days apart.
- Boost resistance by mixing into drinking water:
- Supplement electrolytes + Vitamin C with Vemedim Anti Gum, Vemedim Electrosol, Vemedim Betavit.
- Liver and kidney tonics (MEBI-GLUCAN C, PARA C ORAL...).
- Vemedim Para C to reduce fever and relieve pain if the chickens are weak.
- Do not use antibiotics indiscriminately, as they are ineffective against viruses.
Prevention is always the most sustainable solution in livestock farming. The Gumboro virus can survive for a long time and spread rapidly, so vaccination combined with biosecurity is the key to preventing outbreaks.
- Use the Gumboro vaccine on schedule:
- Dose 1: when chickens are 5 days old.
- Dose 2: at 14 days old.
- Dose 3 (booster): at 23 days old.
The vaccine can be administered by eye drop, nasal drop, or mixed into drinking water. Choose a reputable vaccine, store it at the proper temperature (2-8°C), and use it up after mixing.
- Maintain coop hygiene:
- Disinfect regularly before and after each flock using Vemedim BKC (GSGC).
- Equipment, feeders, and drinkers must be washed and dried.
- Avoid dampness and drafts, as these are environments where the virus can easily survive.
- Manage the flock properly:
- Do not raise multiple age groups in the same area.
- Isolate newly introduced chickens for at least 2 weeks.
- Restrict outsiders from entering the farm and disinfect footwear and clothing when entering and leaving.
Gumboro disease is one of the most dangerous diseases in young chickens, not only causing rapid death but also weakening the immune system for a long time, affecting future production efficiency. To control this disease well, farmers need to proactively prevent it with vaccines, maintain clean housing hygiene, and closely monitor the flock’s health every day. Take action now to protect your flock by contacting Vemedim today if you notice any suspicious signs of disease!
