Swine asthma can only be caused by direct contact between sick pigs and healthy pigs. When sick pigs cough, wheeze and sneeze, they spit out secretions containing pathogens and form droplets, which can be infected through respiratory tract, wound, subcutaneous injection and digestive tract. Because of the occurrence of infectious diseases, only a certain number of pathogens can cause diseases. For airborne diseases, by increasing ventilation, the concentration of pathogens in piggery can be reduced, and the occurrence and spread of diseases can be controlled.
2. Vaccinate.
Vaccination immunization is an important means to control infectious diseases. It is suggested that the farms with frequent occurrence of swine pant disease should be vaccinated, and adult breeding pigs should be vaccinated with freeze-dried attenuated vaccine for swine pant disease once a year. The reserve breeding pigs are immunized once before breeding; Piglets were immunized once at the age of 7 ~ 15 days.
3. Antibiotic therapy
Mycoplasma hyopneumoniae is not sensitive to penicillin and sulfonamides, but sensitive to spectinomycin, oxytetracycline and kanamycin.
4. Preventive medication in high incidence season
5. Strengthen feeding management (feeding density, environmental disinfection, feed nutrition, ammonia smell, dust).
Reducing the feeding density, generally speaking, doubling the feeding density will increase the incidence of infectious diseases tenfold, and reducing the feeding density is also an important means to control the spread of diseases. Pay attention to environmental disinfection, disinfect the pigsty 1 ~ 2 times a day according to the epidemic situation, and treat the incidental pathogenic microorganisms in feces and dirty water harmlessly. Commonly used disinfectants are 0.5% formalin, 0.5% caustic soda, 20% lime milk, 1% carbonic acid, etc. And the diet should be scientifically prepared and reasonably matched. Do less and do more. Strengthen ventilation, keep pigsty dry, reduce ammonia stimulation, and reduce dust carrying a large number of pathogenic microorganisms.
6. Establish healthy breeding pigs without pathogenic bacteria.
Conditional breeding pig farms can carry out quarantine and purification, and establish breeding pigs without mycoplasma infection. In areas or pig farms without this disease, the principle of self-propagation and self-support should be implemented. Strict quarantine and strict implementation of various veterinary epidemic prevention systems can prevent the introduction of pathogens.
The weather in autumn is crisp, the climate is dry, and the moisture in the air is reduced. The upper respiratory tract of pigs such as nose and mouth, mouth, nasal cavity and tracheal mucosa is abnormally dry due to lack of moisture, and the mucosa is easily stimulated by airborne dust, viruses and bacteria. In addition, the weather turns cold, the temperature difference between morning and evening is large, and pigs drink less water, which aggravates the dryness in pigs and causes lung heat. At this time, pigs will cough (relieve) as long as their resistance is slightly lower and their stress ability is poor.