Study On The Purification Of Pseudorabies In Intensive Pig Farm Of Guangdong Province

Pseudorabies(Pseudorabies,PR)is also called O Yates Ki S's disease(Aujeszky disease,AD),is composed of pseudorabies virus(Pseudorabies Virus,PRV).A variety of animal can be caused by PRV infection,but the pig is the natural host of PRV and the susceptibility of the highest incidence is most serious.Infected piglets showed temperature increasing,nerve the symptoms,slow growth and high mortality of pregnant sows had abortion,stillbirth,fetal mummies,healthy pigs and pigs,pigs can be infected after contact with infected with this disease,adult pigs generally do not show symptoms This disease is widespread in the country,is one of the most important infectious diseases of pigs,once the disease is difficult to eradicate.PR in Guangdong province has many farms,which seriously restrict the development of the pig industry,causing huge losses.To control the spread of the swine pseudorabies,improve breeding efficiency,this experiment from the epidemiological investigation,making purification scheme,farm purification implementation aspects of purification of porcine pseudorabies was investigated by experiment.This paper adopted Guangdong four pig farm to do the following research into test field.Through to the Guangdong province Chaozhou,Zhanjiang,Yunfu,four the four pig farms in Qingyuan by the method of PCR PR positive sampling,survey of the epidemiology of PR,four of surveyed farms sampling four quarters of the disease and the nasal swabs,purified positive rate in 10-35%,the positive rate is high.And the abroad successful purification of PR Experience analysis,formulation of immune elimination and quarantine purification strategies,each with the following measures,inactivated vaccine of PR positive rate of less than 10% of the farms concentrated immunity by PR,but more than 10% farms to take quarantine elimination,the positive rate of pig farm for two consecutive years is low,the use of gene deletion vaccineimmune,and conducted every quarter of pharmaceutical care on sow group of existing nursery pigs cleaning and disinfection group,the empty bar,with the pig disinfection after weaning directly into homes and grow well thermal insulation comprehensive prevention and control measures.The test in time 20152017 two strict implementation of PR purification The case of 4 pig farms positive rate below 5%,the current farm index data has stabilized,the positive rate of PR,the morbidity and mortality of piglets of sows were controlled,and ultimately achieve significantly lower PR positive rate,improve pig production performance,increase the economic benefits of farm results showed that the test results in the test pig,and provide a reference for the purification of pseudorabies in domestic,worthy of the pig reference solution.