The disease was once called "mysterious pig disease", "new pig disease", "porcine epidemic abortion and respiratory syndrome", "porcine reproductive and respiratory syndrome", "blue ear disease" and "classical swine fever", and it was classified as a second-class infectious disease in China.
Porcine respiratory syndrome (PRRS) is a respiratory disease caused by many factors, which is caused by the interaction of virus, bacteria, environmental stress and low immunity of pigs.
I. Characteristics of the disease
1. First, due to the progress of pig breeds and feed, the stress state has enhanced the susceptibility of pigs.
2. Second, mixed infections have increased.
3. The third is the increase of immunodeficiency diseases.
Fourth, the role of vaccines is limited.
5. Fifth, the drug resistance of bacteria has increased.
6. Sixth, the harm of parasitic diseases has increased.
Second, pathogens.
Primary infectious diseases include viral diseases and bacterial diseases caused by porcine reproductive and respiratory syndrome virus, porcine pseudorabies virus, swine flu virus and porcine respiratory coronavirus, such as porcine asthma, infectious pleuropneumonia and infectious atrophic rhinitis. Secondary infectious diseases include swine pneumonia, streptococcus suis, paratyphoid fever and Haemophilus parasuis.
Extended data:
Prevention and control countermeasures:
First, strict management, establishing a bio-safety system of pig farms with management as the core, introducing and preventing the acquisition of recessive infected pigs, and doing a good job of isolation and assimilation; Regular serological monitoring. Strictly all in and all out; Ventilation, artificial timely removal of dry manure, nursery, delivery room insulation, reduce temperature difference; Do a good job in sanitation and disinfection.
Second, the improvement of nutritional level is beneficial to improve the disease resistance of pigs, especially in the process of onset, because of the reduction of feed intake, the development of immune system is affected.
Three, do a good job of swine fever, swine pseudorabies, swine asthma, porcine contagious pleuropneumonia, atrophic rhinitis and other diseases of vaccine immunization.
Sichuan Agricultural Network-Causes and Prevention of Porcine Respiratory Syndrome
Baidu encyclopedia-porcine blue ear disease