Histopathological Studies on Leucocytozoon Caulleryi Infection on Broiler in Endemic Area of Indonesia

Objective: This study aimed to observe the characteristic histopathological lesion of internal organ of broiler chicken infected by Leucocytozoon caulleryi. Material and Method: This study conducted in several locations in two island of Indonesia which recorded as endemic area. Clinical symptom was observed to determine the suspected animal. Subsequently, blood smear was conducted to confirm the parasetiemia stage and observed the gross lesion of whole body related to pathological symptom of leucocytozoonosis. Every internal organ which was suspected affected, performed for histopathological preparation and examined under light microscope. The data analysis presented descriptively. Results: Clinical symptom was observed from the sample population. Blood smear result confirmed that suspected chicken was due to the parasitemia of leucocytozoonosis. Most pathological finding showed petechiae spread in muscle tissue. Spleen, liver, lung and heart microscopic lesion showed megalozchizont. Several inflammation findings were showed in infected organ and alteration tissue order was shown in spleen. Conclusion: Leucocytozoon caulleryi could impact the histological aspect and affect the several organs specifically with high vascularization.