Question
Biology Question on Strategies For Enhancement in Food Production
Which one of the following is a viral disease of poultry ?
Pasteurellosis
Coryza
New Castle Disease
Salmonellosis
New Castle Disease
Solution
New castle disease is a highly contagious r zoonoic bird disease affecting many domestic and wild avian species. Its effects are most notable in domestic poultry due to their high susceptibility and the potential for severe impacts of an epidemic on the poultry industries. It is endemic to many countries. The causal agent, New castle disease virus (NDV), is a negative- sense single-stranded RNA virus. Transmission occurs by exposure to faecal and other excretions from infected birds, and through contact with contaminated feed, water, equipment and clothing. 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. They can include respiratory signs (gasping, coughing), nervous signs (depression, inappetence, drooping wings, paralysis), swelling of the eyes and neck, diarrhoea, rough or thin-shelled aggs and reduced egg production.