What is the main cause of disease in poultry birds?

Poultry Birds:

1. The poultry birds are the birds that belong to animal husbandry, and they are mainly used for meat and eggs.

Causes of Disease in Poultry Birds:

1. The infecting agents spread from one to another and cause the disease and illness in poultry birds.
2. Fowlpox is a slow-spreading viral disease of poultry..