Duck defeat: also known as poultry cholera, ducks occurred more often in older ducks. The characteristics of acute onset, rapid death, row of green stool, small bleeding spots on the serosa and mucous membrane, the liver covered with gray-yellow spots of necrosis. The feed intake of ducks decreased, their mental state was generally not good, and egg production began to decline. The diseased ducks are slow in action, have a gait, and often fall behind the ducks. They do not want to swim underwater, feathers are loose, appetite is abolished, and the body temperature rises, usually at 42.5 to 44°C. As the swells up in the scrotum, the stench often flows out of the nose and mouth. There are also sick ducks who cough, breathe open their mouths, breathe faster, wheezing their heads and shake their heads in an attempt to excrete mucus in the throat. Therefore, it is also known as "shaking his head." Sick ducks diarrhea, diarrhea, excretion of gray, grayish yellow or yellowish green excrement, and sometimes dilute fecal blood, unpleasant odor. Some sick ducks have late spasms and often die within 1 to 3 days.
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