7-Spirochetosis It is a septicemic disease of turkeys and chickens of all ages and characterized by depression, cyanosis, diarrhea, paralysis and deaths (100%). Etiology: Borrelia gallinarum.
Lesions: 1-Presence of mites on the skin (intermediate host). 2-The spleen is enlarged and mottled (has uniform whitish foci with ecchymotic hemorrhages). 3-The liver is enlarged and shows small necrotic or hemorrhagic foci. 4-The kidneys and heart are enlarged and pale. 5-Catarrhal enteritis. 6-The spirochetes are stained black by Levaditi’s stain.
Remark: B. anserine causes, septicemia in poultry and canaries. Serpulina hyodysenteriae associated with typhlitis in rheas and poultry Serpulina piloscholi in ceca of pheasants, disease.