1. The fowl that screams out should be eliminated. 2. Chickens with special red, like blood or purple dried chickens should be eliminated. 3. Feather erected, flattened chickens in the lower abdomen should be eliminated. 4. The chickens with bright chicken hair should be eliminated if they do not raise their heads. 5. Look around and look at the thief. The chicken with yellow claws should be eliminated. 6. Chickens that stretch upward and open their mouths should be eliminated. 7. After 40 days of laying, the chickens are very small, and those chickens that are not enough to lick two fingers should be eliminated. 8. When feeding chickens in the morning, feed them from the front and observe the chickens afterwards. When some chickens are found to eat, they are not active. When the chickens are back or lying in cages, the chickens with flattened eyeballs should be eliminated. 9. From 6 to 11am in the morning, when the chicken was laying eggs, it was found that the chicken body could not stand. Do Electrode,Smart Do Electrodes,Abs Do Electrode,Dissolved Oxygen Electrode INESA Scientific Instrument Co., Ltd , https://www.inesarex.com