bird infectious bronchitis

Infectious bronchitis cases have increased in poultry farming during the last two years in Georgia. In epizoott, the diseases of the disease and the unreliable farms have increased. Disease causes serious damage to poultry farms, about 5-30%.


Infectious bronchitis is a highly contagious viral disease characterized by a bird's respiratory tract, nephritis, kidney function, ovaries in ovaries and ovaries, which leads to decreased egg production. Coronary Virus is an RNA containing RNA.


Infectious bronchitis is characterized by strong mutation, so many antigenic variants are circulating and generated various pathotypes and immunosupts. Classics and classical strains are classified by:


Classical (masseuse) H120 B48 Ma5 MM H52  
Variant B793(1/96,4/91) QX Q1 Variant2 J-2 D274


The quality of the spread of the disease affects the avian age, microclimate, food ration and vaccination program.

The symptoms of clinical signs affect the age of bird age and virulence of the virus. What are three clinical syndromes: a) Respiratory b) damage to reproductive organs c) nephrotic-nephrotic syndrome.

The diagnosis of the diagnosis becomes complex: the epizootic condition, clinical signs and path-anatomical changes. However, it is crucial that laboratory examination is conducted with PCR, when the disease and strain are identified.

Treatment is not in case of infectious bronchitis.

After the diagnosis of the infectious bronchitis, the farm is prohibited, and the regulation is quarantine and prohibition of the bird and egg.

The farm is considered to be good for infectious bronchitis after 3 months from the last case, during which period multiple dysfunctioning works are carried out with universal disinfectants (eg Dexid-400, Dexid-70, Dexon-100 and etc.)

After 3 months in the farm, the birds will be vaccinated in the incubator, and the following will be carried out in the farm (classical and variant strains of infectious bronchitis).

Prophylaxis and vaccination - Many monovalent and polyvalent vaccines are used in the world. In many vaccination programs, the most commonly used vaccine vaccines are either spray or drinking water. In the specific epidemiological situation, the combination of the combined massage strain with a variant strain is a cross-border protection against the types of bronchitis (classical and variant).

Presents chicken infectious bronchitis (classical and variant strains), cross-breaking vaccination programs for broilers. The scheme is drawn up by the French company "Ceva" with the recommendation of poultry specialist:

(H120 - Classic Strain, Ibird - Variant Strain)


day good farm variant 1 variant 2  * classic 1 *
Incubator H120 ( Bron 120 ) H120 + IBird H120 + IBird H120 + IBird
10 days       H120
14 days IBird   H120 + IBird  
22 days       H120

From this table, the method is selected by a veterinary doctor, in the country (in the region, in the area) of the epizootic condition.

* (Snowflake) high risk groups.

Conclusion: Based on the Epidemiological Situation of Georgia, we recommend the following farmers, incubators and veterinarians: to carry out bio security norms in farms, to impose restrictions on uncontrollable access to human and transport means. Conduct the disinfecting, deductions and disinfecting measures Categories. Follow the prescribed prophylactic vaccination scheme, which will allow us to maintain the well-being of the farm and produce a healthy product.


Davit Sirbiladze

Veterinary company "Invet"

Head of Consulting Group

/ Poultry expert