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Newcastle disease Virus Ab Rapid Test kit

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Clinical signs

Egg drop after a (otherwise asymptomatic) Newcastle disease infection in a duly vaccinated broiler parent flock
Signs of infection with NDV vary greatly depending on factors such as the strain of virus and the health, age and species of the host.
The incubation period for the disease ranges from 4 to 6 days. An infected bird may exhibit several signs, including respiratory signs (gasping, coughing), nervous signs (depression, inappetence, muscular tremors, drooping wings, twisting of head and neck, circling, complete paralysis), swelling of the tissues around the eyes and neck, greenish, watery diarrhoea, misshapen, rough- or thin-shelled eggs and reduced egg production.
In acute cases, the death is very sudden, and, in the beginning of the outbreak, the remaining birds do not seem to be sick. In flocks with good immunity, however, the signs (respiratory and digestive) are mild and progressive, and are followed after 7 days by nervous symptoms, especially twisted heads.

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