What are the symptoms of laying hen respiratory disease?

1. Symptoms of infectious rhinitis: This disease is an acute respiratory disease of chicken caused by Haemophilus paragallinarum. The clinical symptom is swelling of the face. The symptoms such as runny nose and tearing are similar to those of the chronic respiratory tract, but usually, there is no obvious balloon lesion and respiratory rales. Chicken infectious rhinitis and mycoplasma disease not only have similar symptoms, but are also easy to be misdiagnosed, and often have mixed infections. However, streptomycin and doxycycline have good effects on these two diseases, and these drugs should be used when a reliable differential diagnosis cannot be made...

2. Symptoms of infectious bronchitis: chicken infectious bronchitis is an acute and highly contagious respiratory infectious disease of chickens caused by infectious bronchitis virus, clinical manifestations of acute onset of flocks, characteristic lesions of fallopian tubes, adult chickens Egg production has dropped significantly and severely deformed eggs have appeared, and all antibacterial drugs have no direct effect, which can be distinguished from chronic respiratory disease. But chicken infectious bronchitis and chronic respiratory disease induce each other, which is easy to cause mixed infection. Sulfa drugs should not be used when selecting drugs for infectious bronchitis in laying hens, because such drugs will not only further affect egg production but also have no effect on mycoplasma disease.

3. Symptoms of infectious laryngotracheitis: Chicken infectious laryngotracheitis is an acute, contagious upper respiratory tract infection caused by infectious laryngotracheitis virus. It is characterized by difficulty breathing, coughing and coughing up blood-containing exudates. During necropsy, swelling, bleeding, and erosion of the larynx and tracheal mucosa can be seen. Acute onset of chickens in the whole group, severe breathing difficulties cough up bloody mucus and soon died. Various antibacterial drugs have no direct effect. These can be related to other respiratory tracts. The disease is different.

4. Symptoms of Newcastle disease: Newcastle disease is a highly contagious disease caused by a paramyxovirus. Also known as Asian chicken fever or pseudo chicken fever. The symptoms of the disease are acute in the whole group of chickens, and the symptoms are obvious, but the digestive tract is severely bleeding, and the head and neck are twisted, the staring of the head is staring, and the lameness and other neurological symptoms. Newcastle disease of chickens can induce mycoplasma disease, and its serious diseases can mask other respiratory diseases, especially mycoplasma disease, and the symptoms of mycoplasma disease gradually show after the symptoms of Newcastle disease of chickens disappear. HSBC's comprehensive medication plan: Plague Kangsan + Huzhining