Blackhead disease (Histomonosis) in a dangerous parasite/
protozoan in poultries, especially chickens and turkeys. This disease
is caused by anaerobic protozoan parasite which its science name is
Histomonas meleagridis. Diseased poultries are depression, reduced
appetite, Sulphur-yellow diarrhea, skin of head becomes pale or
cyanotic, ceca and liver is swollen, caseous cores with white and liver
appears gangrene sports as “Chrysanthemum”. Diseased chickens
were died, if they are not treated immediately, the mortality may be 85%- 95%.
