Chicken paw swelling and papules are mycoplasma synovialis, which is an infectious disease of chickens caused by mycoplasma synovialis, also known as infectious synovitis. The diseased cockscomb is atrophied, white, solitary, prone to lying, shrinking head and closing eyes, slow growth, rough feathers, slight gait, limping and anemia. Green stool, ascites and emaciation. The treatment is to add black to the new pasturage? Drinking water for 5 days is a course of treatment.
How is infectious synovitis of chicken?
The pathogen of the disease is mycoplasma synovialis, which is a polymorphic sphere with a diameter of about 0 by Giemsas staining. 2 microns. The pathogen is unstable in acidic environment, sensitive to high temperature (above 40c) and has strong frost resistance. It can be effectively used for 2 years at -20c and stored for several years at 4 C. The natural hosts of infectious synovitis are chickens and turkeys. Acute infection occurred in chickens of 4 ~ 16 weeks old, and also occurred in chickens of other days. Chronic infection can occur in chickens of any age.
There are two modes of transmission of this disease: horizontal transmission through contact and vertical transmission through eggs. Pathogens spread into the air through coughing and sneezing of sick chickens. Polluted servo systems, drinking water, tools and mating of chickens can spread to each other. Eggs infected by hens also have bacteria, which breed in chicken embryos after hatching, resulting in embryo death and infected chickens.
The disease can occur all year round, especially in autumn and winter and cold and humid seasons. Poor feeding and management of chickens, poor ventilation in henhouses, overcrowding, great climate change, and hot and cold are all important factors that stimulate this disease.
How to prevent infectious synovitis in chickens?
1. When controlling the introduction and purchase of chickens in commercial chicken farms, it is necessary to investigate in advance whether there is a history of chicken raising enterprises and commercial chicken farms, so as to avoid buying mycoplasma synovium positive chickens from chicken farms.
2. Mycoplasma has poor resistance to the external environment. Strengthening the disinfection and cleaning of the feeding environment, and keeping the indoor and outdoor environment clean and disinfected 1 ~ 2 times a week in general farms can effectively reduce the horizontal transmission of this disease.
3. The incidence of synovitis is closely related to the management of chickens. Reasonable arrangement of the scale and density of single-house chickens, good temperature and humidity control and ventilation management are of great significance to reduce the incidence.
4. At present, there are some vaccines against mycoplasma in the market, including live vaccine and inactivated vaccine, but the clinical protection rate is not exact due to the infection characteristics of pathogens. Chicken farms can choose to vaccinate according to the actual situation. The application of mycoplasma sensitive antibacterial drugs such as Italian seasoning soup has a good effect on preventing infectious synovitis at the initial stage of admission.
5. Use traditional Chinese medicines that promote immunity, such as Fuzheng Jiedu Powder.
6. Providing sufficient and balanced feed nutrition for chickens and supplementing multivitamins can improve the anti-stress level and immunity of chickens.
7. Isolate sick chickens with symptoms from the henhouse as soon as possible, and do a good job in environmental disinfection and sanitation.
8, breeding chicken purification, eliminate positive infected chickens, reduce the risk of vertical infection, but also strengthen disinfection and purification in the incubation process to avoid infection of chicks in the incubation stage.