NEWCASTLE DISEASE in Chickens (laying Hens), poultry diseases symptoms & Poultry farming

http://www.fieldcasestudy.com Newcastle disease, (by NDv) is the most important disease in poultry. Clinical symptoms vary greatly. depending on the level of immunity. We can get the birds died acutely by velogenic viscerotropic newcastle disease virus. But we can observe with the same virus infections cause only mild clinical symptoms. Depending on the level of immunity. However, this virus is very virulent. The virus can still infect poultry with a high level of immunity, while not resulting in death. Perhaps only mild clinical symptoms. In laying hens that have been vaccinated still often found cases Newcastle disease. Disruption of production is very depending on the level of immunity. Egg production problems, in case VVND in laying hens are often misdiagnosed with a case of infectious bronchitis. If only the clinical symptoms observed in shape of eggs, misdiagnosa might occur. Some clinical symptoms in eggs similar to bronchitis infections such as changing the color of eggshell, egg shape is not normal, watery albumin, blood spots. Just a few points, in the case of infectious bronchitis, the spread of disease more quickly, change shape of more dominant egg. In VVND, on laying hen rarely cause death to the extreme, because generally been vaccinated chickens. But if we look closely, there is a little increase in daily mortality rate, but not significant. In the dead chickens could found severe pathological lesions. While the chicken with torticollis symptom, rare found severe pathological lesions. poultry farming and poultry diseases symptoms