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Acute swine fever often has no symptoms, and pigs suddenly die. Pig body temperature rises to 41-42 ℃, appetite decreases, depression occurs, and the mucous membranes of the eyes and nose become congested and weak. The disease lasts for 1-2 days and has a high mortality rate. Other typical symptoms include inflammation of the conjunctiva, purulent discharge, and sometimes small bleeding spots in the conjunctiva, in addition to symptoms such as not eating, poor vitality, prone to lying down, bent back, chills, and weakness. Inflammation of nasal mucosa with purulent discharge. At first, the feces turned black, like beads on an abacus. Late stage diarrhea, foul odor, mucous or bloody stool. Purple red spots of varying sizes can be seen on thin and sparse skin such as the nose, behind the ears, abdomen, and inner limbs of pigs; The boar squeezed the foul smelling and turbid liquid with his hands and shot it out. The oral mucosa is unclean, pale or cyanotic, with bleeding spots on the inner surface of the lips, gums, corners of the mouth, and other areas. Piglets are accompanied by neurological symptoms when they develop symptoms, and when disturbed by external factors, they may scream and fall to the ground.
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