How to prevent and treat pseudorabies
Michelle Tang
Foreign trade manager at GMP+ Certified Manufacturer of Animal supplements,Nutrition ,Feed Additives
Pseudorabies is an acute infectious disease caused by porcine pseudorabies virus. The clinical symptom of infected pigs is increased body temperature. Newborn piglets mainly show neurological symptoms and can also invade the digestive system. Adult pigs are mainly recessive infection. After infection in pregnant sows Causes abortion, stillbirth and respiratory system symptoms, boars show reproductive disorders and respiratory system clinical symptoms.
1 Etiology and epidemic characteristics
Pseudorabies virus belongs to the Herpesviridae family and is a kind of alpha-herpesvirus of the herpesvirus subfamily. The complete virus particle is round with a diameter of 150-180 nm. The genome is a strong double-stranded DNA. The capsid is a dodecahedron. Pseudorabies virus has only one serotype, but there are differences between the strains, and it has strong resistance to the outside world.
The disease can occur throughout the year, and a variety of animals can be infected with pseudorabies. The virus can be detected in the milk of sows 6-7 days after infection. Pregnant sows can be transmitted vertically to the fetus after infection. Infected breeding pigs and newborn piglets can carry the virus for life. The disease is difficult to eradicate and is prevalent all year round.
2 Main clinical diagnosis and pathological changes
(1) Vomiting, diarrhea, fever, dyspnea, abdominal breathing, cough
(2) Neurological symptoms, reflex, intermittent cramps, arched back
(3) Miscarriages and stillbirths occur in sows, most of which are more than stillbirths
(4) The boar testicles are enlarged or atrophy
(5) Needle-shaped bleeding points in the kidneys; meningeal hemorrhage, congestion, edema
(6) There are scattered white necrotic spots in tonsils, liver and spleen
(7) Catarrhea of gastric mucosa, hemorrhage of gastric fundus mucosa; pulmonary edema, bleeding spots
3 Prevention methods
Vaccines are the best way to prevent and treat the disease, and sows are immunized. Propagating sows should be immunized with pseudorabies vaccine in March, July and November each year, and boars should be immunized with the same pseudorabies vaccine in June and December each year. Other diseases are immunized according to normal immunization procedures.
In addition to vaccination, you should pay attention to food nutrition, biological safety, etc., and also need regular disinfection and environmental sanitation.
Chinese herbal medicine can be used to prevent and treat pigs that have failed immunity and during the blank period of immunity. Suitable Chinese medicines for this disease include Yuanhuang Qudu Decoction and antiviral Chinese medicine.
Can it work well against African swine fever?