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8 day old chick with difficulty breathing, due to an Avian influenza infection. Avian infectious bronchitis, caused by a strain of Avian coronavirus previously known as infectious bronchitis virus [2] Avian infectious laryngotracheitis, caused by Gallid alphaherpesvirus 1 [3] Avian influenza, caused by Avian influenza virus [4]
The disease affects all ages of chickens. The disease can persist in the flock for 2-3 weeks and signs of the disease are seen 1–3 days after infection. Transmission of the disease is through direct interaction, airborne droplets, and drinking contaminated water. Chickens having infection and those carriers contribute highly to the disease ...
The symptoms are highly fatal to turkeys, but effect less damage in chickens. However, outbreaks in chickens may result in high morbidity, moderate mortality, and extensive culling, leading to overall poor flock performance. [3] Concurrence of Salmonella typhmurium and E. coli was found to cause high mortality in broiler chickens. [6]
Classification of a virus strain as either low pathogenic avian influenza (LPAI) or high pathogenic avian influenza (HPAI) is based on the severity of symptoms in domestic chickens and does not predict severity of symptoms in other species. [4] Chickens infected with LPAI display mild symptoms or are asymptomatic, whereas HPAI causes serious ...
Dermanyssus gallinae (also known as the red mite) is a haematophagous ectoparasite of poultry.It has been implicated as a vector of several major pathogenic diseases. [1] [2] Despite its common names, it has a wide range of hosts including several species of wild birds and mammals, including humans, where the condition it causes is called gamasoidosis.
Adult birds and old chickens are more susceptible. In parental flocks, cocks are far more susceptible than hens. [2] Besides chickens, the disease also concerns turkeys, ducks, geese, raptors, and canaries. Turkeys are particularly sensitive, with mortality ranging to 65%. [3]
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Fowlpox is the worldwide disease of poultry caused by viruses of the family Poxviridae and the genus Avipoxvirus. The viruses causing fowlpox are distinct from one another but antigenically similar, possible hosts including chickens, turkeys, quail, canaries, pigeons, and many other species of birds. There are two forms of the disease.