Sheep pseudorabies is an acute infectious disease of domestic animals and wild animals caused by the pseudorabies virus and is characterized by "itchiness".
Experts solve the disease. (1) Pathogens: The pathogen of this disease is pseudorabies virus, which belongs to the herpes virus family and alpha herpes virus subfamily and is spherical or oval in shape. The virus has strong resistance to the external environment. It heats at 55-56°C for 30-50 minutes, and it is stored for a long time under low temperature conditions. Sensitive to sunlight, 1% sodium hydroxide and formalin (40% formaldehyde) are effective for disinfection.
(2) Epidemic characteristics: The disease can infect cats, dogs, cattle, sheep, goats and pigs under natural conditions. Diseased pigs, poisoned pigs and poisonous rodents are important sources of infection. Cows and sheep are mainly exposed to feed and water contaminated by rodents and pigs (especially rats), and they are transmitted through the digestive tract, nasal mucosa, mucosa of the genital tract, or surface wounds.
(3) Symptoms: Sick sheep often start itching at the site of viral invasion. If the nasal mucosa is infected, they stubbornly rub against the nose or part of the face. If the eye conjunctiva is infected, the diseased sheep hooves hard and itchy, and some are even severe. Friction caused the eyeball to collapse and collapsing; there was also a dog sitting posture and forced to rub the anus on the ground, or on the ground to stop itch; itch also occurred in the scapular or chest around the breast. Skin bleeds, edema, and even bleeding can be seen in the itchy areas. There are also some neurological symptoms such as grinding teeth, strong jets, sweating, hind foot force, and intermittent irritability. There was a short-term increase in body temperature in the early stages of the disease, and it soon fell to room temperature or lower. The limbs were weak until the paralysis, and a large number of paralyzed larvae bleeded and eventually died. The course is usually 1-3 days.
(4) necropsy: necropsy shows severe brain and meningeal congestion and hemorrhage, gastrointestinal mucosa also found congestion and bleeding, sometimes liver congestion and swelling.
(5) Diagnosis: Definite diagnosis of the disease, in addition to the epidemiological features, clinical symptoms and necropsy, the need for laboratory diagnosis.
Expert treatment. 1 Prevention: a, rodent control, eradication of rat infection, and prohibit the pigs from entering the sheep house; b, once the disease occurs, cull the diseased sheep, and immediately disinfect the sheep house and the surrounding environment, manure fermentation processing.
2 Treatment: No specific treatment drugs have been found yet.
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