1. Get up at about 5 o'clock in the morning and observe the flock and feeding conditions. The diseased chicken stays away from the corridor. Take a stand alone. Observe chicken droppings on both sides of the shed. Comprehensive analysis or professional and technical personnel is required.
2. In the afternoon, the feed intake of the flock was observed (feeding at about 4 o'clock yesterday afternoon), and if the time was delayed, the feed intake decreased.
3. In the evening, the chickens are in a rest state, listening to the strange sounds of the flock (screaming, coughing, etc.) and abnormal sounds indicating that the flock is infected.
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