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CIRCOVIRUS / PSITTACINE

BEAK & FEATHER DISEASE (PBFD)

What is PBFD?

PBFD is the abbreviation for the Psittacine Beak & Feather Disease.This term refers to two important features. In the 70s, when the disease was discovered, were only birds of the species Psittaciformes (hookbills) infected. It is now known that the Psittacine Beak & Feather Disease (PBFD) is caused by the Circovirus. The Circovirus was discovered in the 90s. It is now also known that the Circovirus infects every kind of bird. For example, detailed studies confirm that the trigger of the diseases Pigeon Circovirus, Psittacine Beak and Feather Disease (PBFD), Chicken Anemia Agent (CAA) and probably the Black Spot Disease in canaries and finches are similar to one other. NOTE: However, other studies also show that the Black Spot disease is caused by mycoplasma (about the BLACK SPOT DISEASE read more>...). But the fact is that each of these diseases cause a form of aquired immunodeficiency, similar to human AIDS. following with secondary infections with other viruses, bacteria and fungi, also mycoplasma (mycoplasmaBlack Spot Disease). PBFD is certainly the best known disease, affecting more than 35 species of hookbills.The Psittacine Beak & Feather Disease results in characteristic abnormalities in feather growth, beak lesions and long-term loss of body condition.
Nestling with a Black Spot

How can I detect the Psittacine

Beak & Feather Disease (PBFD)

or an infection with the Circo-

virus?

The first symptom in hookbills is the increased formation of featherdust, following the loss of feathers. The new feathers are deformed, brittle, distorted and smaller than normal. Colour changes are also features of the Psittacine Beak & Feather Disease. As the disease progresses beak alteration (softening, deformations, fractures and cracks) can occur. In pigeons and chickens are the symptoms respiratory symptoms, weight loss, diarrhea and dying after a short period of illness ( up to 5 days). Almost of avians show only secondary infections such as Pasteurella, Paramyxovirus, Coccidiosis, Tichomonaisis, Aspergillus, also diseases as Ornithosis/Psittacosis. Typical of an infection with the Circovirus is, that infected flocks show illness, but no mortality, while in other flocks all of the birds will die. About the symtoms of an infection with the circovirus in canaries and finches are currently no uniform experience as a basis. The statements are very contradictory. Only a blood test can give information have an actual infection with the Circovirus. Of course, also the symptoms for pigeons and chickens can be sign of an infection with the Circovirus in canaries and finches. Note: Specific instructions for preparing a blood test must be observed. To do that, ask a special clinic or specialist veterinary because the Circovirus is also contained in the featherdust and saliva of the birds.  

Ends a viral infection always

deadly...

and how can I protect the birds

against the Psittacine Beak &

Feather Disease (PBFD) or an

infection with the Circovirus?

We have to differentiate between infection and disease. First, the bird becomes infected with the Circovirus. If the bird infected with the Circovirus, it does not necessarly have to suffer. There are three ways of an infection and outbreak of the disease: 1. The immune system is not strong     enough and the bird falls ill after     infection with the Circovirus .The bird is     probably also due to die. 2. The immune system is strong enough.      The bird doesn’t show a sign of illness     and the Circovirus disappears from the     body. Then the bird is healthy and there     is also no risk of infection for other birds. 3. The immune system is strong enough     that the bird not suffer directly. The bird     looks healthy, but can infect other birds     with the Circovirus. The surest protection against all infectious diseases is a quarantine of 6 weeks and the aforementioned blood test.