Thyplitis haemorrhagica et necrotican in the incidence of coccidiosis in broiler chickens aged 32 days

Coccidiosis is a parasitic disease that often infects the digestive system of poultry and is caused by protozoan parasites from the genus Eimeria spp. Eimeria tenella is one of the most pathogenic protozoan species and has a predilection for the cecum and causes bloody diarrhea. The purpose of this paper is to determine the infectious agent that causes the death of 32 days old, female broiler chickens originating from one of the chicken farms in Petak Village, Gianyar District, Gianyar Regency. Clinical signs observed in chickens are weakness, pale wattles, dull looking feathers, clumps in the corners of the cage, and bloody diarrhea and dirty cloaca. Based on the results of the anatomical pathology examination, it showed that there was hemorrhage and thickening of the cecum wall (thyplitis haemorrhagica et necrotican). On histopathological examination, schizonts, hemorrhage, necrosis and inflammatory cell infiltration were found in the cecum and on parasitological examination, Eimeria sp oocysts were found. which has sporulated in chicken feces samples with moderate infection intensity. Conclusion: the case chicken was diagnosed as infected with coccidiosis by Eimeria tenella. Sanitation and improved cage management need to be carried out to prevent the occurrence of coccidiosis in chickens.