Aspergillosis – Backyard Chickens’ Health and Care

Illnesses in chickens

What is Aspergillosis?

Aspergillosis is a fungal infection that affects birds, including chickens. Aspergillosis can be fatal if left untreated, so it is important for chicken owners to be aware of the symptoms and take appropriate action if they suspect their birds may be affected.

Aspergillosis Symptoms

The symptoms of aspergillosis in chickens can vary depending on the severity of the infection. In mild cases, chooks may show no symptoms at all. However, in more severe cases, they may exhibit difficulty breathing, coughing, wheezing, and sneezing. They may also have reduced appetite and show signs of weight loss. As the infection progresses, affected birds may develop nervous system symptoms such as tremors, head tilting, and seizures.

Aspergillosis Causes

Aspergillosis is caused by the fungus Aspergillus fumigatus, which can be found in the environment. The fungus can enter a bird’s respiratory system through inhalation of spores. This can happen when chickens are housed in poorly ventilated or damp conditions, or when they are exposed to contaminated feed or bedding.

Aspergillosis Diagnosis

Diagnosing aspergillosis in chickens can be difficult as the symptoms can be similar to those of other respiratory illnesses. A veterinarian may take a sample of your hen’s respiratory secretions or blood to test for the presence of the fungus. Radiography may also be used to assess the extent of lung damage.

Aspergillosis Treatment

Treatment for aspergillosis in chickens usually involves antifungal medication. It is important to start treatment as soon as possible to prevent the infection from spreading and causing further damage. However, some chickens may not respond to treatment, particularly if the infection is advanced or the bird’s immune system is compromised.

Aspergillosis Prevention

Preventing aspergillosis in chickens involves ensuring that their housing is clean, dry, and well-ventilated. Regularly cleaning and disinfecting the coop, as well as providing fresh bedding, can also help to reduce the risk of infection. It is also important to ensure that the birds are not exposed to contaminated feed or water.


Aspergillosis is a serious respiratory infection that can affect chickens. It is caused by the fungus Aspergillus fumigatus, which can be found in the environment. The infection can be difficult to diagnose and treat, so it is important to take steps to prevent it from occurring in the first place. By keeping their coop clean and well-ventilated, chicken owners can help to reduce the risk of their birds developing aspergillosis.

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