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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 ...
Clinical symptoms are a result of flukes attaching to the conjunctiva. It has different effects, depending on the host. Infection may cause congestion and erosion of the conjunctivae, [7] conjunctivitis with persistent lacrimation, [8] and semilunar fold swelling [9] in chickens, ostriches, and humans, respectively.
It causes chronic respiratory disease (CRD) in chickens and infectious sinusitis in turkeys, chickens, game birds, pigeons, and passerine birds of all ages. [1] [2] Mycoplasma gallisepticum is a significant pathogen in poultry. Mycoplasmosis is the disease caused by infection with mycoplasmas. Mycoplasmas have many defining characteristics.
Lesions of the skin and diphtheritic membrane of the respiratory tract are common when domesticated and wild birds are infected with the Avipoxvirus. [9] There are two common forms of clinical signs. Cutaneous pox are most common. They appear as wart-like growths around the eyes and other apterylae (feather-free) areas, sometimes in large clusters.
Poultry diseases occur in poultry, which are domesticated birds kept for their meat, eggs or feathers. [1] Poultry species include the chicken , turkey , duck , goose and ostrich . [ 1 ]
Marek's disease is a highly contagious viral neoplastic disease in chickens. It is named after József Marek , a Hungarian veterinarian who described it in 1907. Marek's disease is caused by an alphaherpesvirus commonly known as "Marek's disease virus" (MDV). [ 2 ]
Tremovirus is of economic importance to chicken farmers because it causes a drop in egg production in laying hens, and neurological diseases in chicks less than three weeks old. The domestic host is the chicken, but it can also infect partridge, turkeys, quail, guineafowl, and pheasants. It has a worldwide distribution. [4]
The resulting disease, known as "gape", occurs when the worms clog and obstruct the airway. The worms are also known as "red worms" or "forked worms" due to their red color and the permanent procreative conjunction of males and females. Gapeworms are common in young, domesticated chickens and turkeys.