Clinical symptoms of Coccidiosis can depend on the infecting species and the amount of infective oocysts. In heavy infections, impaired nutrient absorption, increased feed conversion ratios, decreased growth rates, poor skin pigmentation, chilling symptoms, diarrhea, prostration, and death may be observed in both chickens and turkeys. 

Identification of infecting Eimeria species can also be made as the Coccidian preferentially infect specific areas of the intestine.

Site of Infection for Chickens 

Site of Infection for Turkeys

Differential Diagnoses