Avian Diseases

Disease Species Affected Cause Symptoms & Signs
Coccidiosis Chickens, turkeys Parasite Weight depression, intestinal lesions, diarrhea/occasional bloody feces
Fowl Pox Chickens, turkeys Virus Small clear to yellow blisters on comb and wattles that soon scab over; decreased egg production
Gumboro/Infectious Bursal Disease (IBD) Chickens Virus Sleepy, white watery diarrhea, compromised immunity
Infectious Bronchitis Chickens Virus Gasping, wheezing, nasal discharge, drop in egg production, soft-shelled eggs
Leukosis Chickens, turkeys Virus Loss of weight, diarrhea, thickened bones, gray eyes
Marek’s Disease Chickens Herpes virus Sudden death, loss of weight, skin lesions, paralysis
Newcastle Disease Chickens, turkeys Virus Gasping, wheezing, twisting of neck, paralysis, severe drop in egg production, soft-shelled eggs

Sources: Poultry Science by M.E. Ensminger, B.S., M.A., Ph.D. and PAH Poultry Health Division