2. Strengthen pig management to reduce or avoid stress factors. According to the nutritional needs of pigs at all stages, the diet should be reasonably matched to provide a comprehensive and balanced feed.
3. Adhere to self-propagation and self-support to prevent recessive infected pigs from bringing in pathogens. Persisting in self-reproduction and autotrophic is the key measure to prevent pigs from carrying pathogens and latent infection with porcine respiratory syndrome.
4. Do a good job in pig immunization in advance to prevent pathogenic porcine respiratory syndrome. Porcine respiratory syndrome is caused by pathogenic factors. It is important to adopt a scientific and reasonable immunization program to eliminate the recessive virulent virus in pigs and do a good job in disinfection.