Meat ducks begin to suffer casualties after 20 days of age, and the mortality rate is about 5%-20%. Large flocks of meat ducks are mentally normal, and the sick ducks are slow to move, the amount of food intake is reduced, and the soy sauce color or green thin feces are pulled.
Meat duck lung damage, black lung is a serious respiratory disease, once the damage is not easy to repair, duck disease mortality rate is high. Humidity, temperature, cold stress are environmental factors that cause lung damage, viruses, bacteria, atypical pathogens, etc. are the pathogenic factors that cause pneumonia - black lung. Management and disease prevention and control are mutually causal, management is to give the ducks a comfortable growth environment guarantee, disease prevention and control is targeted disease prevention and control hands.
Duck black lung emphysema respiratory diseases, etc. with Dalong black boiling qing contains licorice, ephedrine, double yellow lian, forsythia, etc., rapid treatment of meat duck black lung, pulmonary hemorrhage, emphysema, respiratory diseases and other problems to protect the liver and protect the kidneys.
High temperature, high humidity and hypoxia: the equipment conditions of the duck house are simple, the micro-environment climate is high temperature and high humidity, the air circulation is poor, the oxygen concentration is low, the carbon dioxide concentration is high, and the fever stress damage and the corresponding lesions of the lungs are induced.
Mycotoxin poisoning: High temperature and high humidity make the feed easy to breed mold during storage and use, produce a large number of mycotoxins, causing immunosuppression of ducks, at the same time, liver enlargement, which is directly related to mycotoxins.