Inclusion Body Hepatitis (Hydropericardium Syndrome) is an acute disease of young chickens associated with anemia, hemorrhagic disorders and hydropericardium.

The Avian Leukosis sarcoma viruses cause erythroid, lymphoid and myeloid leukosis, a variety of other tumours, such as fibrosarcomas, hemangiomas, nephroblastoma and bone disorder osetopetrosis.

Marek’s disease is a lymphoproliferative disorder of chicken is characterized by  oncogenic transformation of T lymphocyte that infiltrate into lymphoid and  other visceral organs.

Infectious Bursal Disease (IBD) is an acute highly contagious viral disease of young chicken that affect lymphoid tissue primarily bursa of fabricius characterized by high mortality in chicks and prolonged immuno-supression.

Avian Encephalomyelitis (Epidemic Tremor) is an acute viral disease of very young chickens (1-21 days) characterized by ataxia, paralysis, tremors in head and neck.

Fowl Pox (Avian Diphtheria) is a slowly spreading viral disease of chicken, characterized by development of discrete nodular proliferative skin lesions on the non- feathered part of the body (cutaneous form) or fibrino-necrotic and proliferative lesions in the mucous membrane of upper respiratory, mouth and oesophagus (Diphtheritic form).

Avian Influenza or AI (Fowl Plague) is an infection of domestic poultry as well as pet, zoo, and wild birds caused by influenza A virus of the H5 or H7 subtypes.