Several forms of Newcastle disease affect chickens, but the lentogenic strain is the most common form in the United States. Luckily, this is the least deadly of the strains and rarely causes death.

Below are four common respiratory diseases in chickens and their causes. Chronic Respiratory Disease (CRD) Chronic respiratory disease (CRD) is caused by Mycoplasma gallisepticum bacteria.

For infectious causes of disease, chicken in almost all situations will show drooping eyes, heads and dropping wings with ruffled feathers. Diarrhoea is a common sign. Some diseases have specific ...

Avian Intestinal Spirochaetosis (AIS) is a chronic, underreported poultry disease caused by Brachyspira spp., with rising ...

Animal diseases have a devastating impact on livestock production. In 2022, for example, 131 million domestic poultry died or were culled as a result of avian influenza (also called “bird flu ...