1, bone marrow cell tumor: characteristic lesions are long yellowish-white, soft, fragile or cheese-like bone marrow cell tumor, usually occurs in the rib and rib cartilage junction, rear of the sternum, mandible and nasal cartilage, Also seen in the skull of the flat bone, common multiple tumors, generally symmetrical on both sides.
2. Hemangioma: seen on the surface of the skin or viscera, the height of the blood vessel lumen is enlarged to form a "blood bleed", which usually occurs in a single way. The rupture of bloody diarrhea can cause severe blood loss in sick birds.
3, anemia type blood red blood cells in the reduction, blood light red, characterized by significant anemia. The autopsy showed that the internal organs (especially the spleen) were atrophic and the bone marrow was light and pale.
4. Myeloblastic leukemia: Anemia, weakness, weight loss, and diarrhea in sick chickens, and blood clots cause hemorrhage. Peripheral blood leukocytes increased, with myeloblasts accounting for 3/4. The bone marrow is hard, grayish or gray. The parenchyma is enlarged and brittle, and the liver has gray diffuse tumor nodules. In advanced cases, diffuse gray infiltration of the liver, kidney, and spleen gives the organ a mottled or granular appearance.
5. The proliferative type is characterized by a large increase in blood red blood cells. The characteristic lesions were diffusely swollen with liver, spleen, and kidney. They were cherry red or dark red, and were soft and brittle. The bone marrow was hyperplastic, softened or watery. The color was dark red or cherry red.
6, erythroblastic leukemia: diseased chicken weakness, weight loss and diarrhea, blood clotting cause feather sac hemorrhage. The disease is divided into two types of proliferative (embryonic) and anemia.
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