Piglet congenital tremor is an infectious disease of piglet rearing caused by a long-standing natural tremor virus in nature. The disease mainly occurs in newly born piglets. The clinical features are rhythmic tremors in the extremities, head or whole body. Usually the symptoms of early birth are heavy, and the symptoms of late birth are minor. Adult pigs are occult or chronically infected.
First, the cause of the disease has been reported that the disease is caused by malnutrition during pregnancy, fetal dysplasia, caused by the special cerebellar hypoplasia; also reported that it is a genetic disease, but it is caused by those genetic factors, it is not clear; Some people think that it is caused by diseases such as swine fever, blue ear disease, circovirus, and pseudorabies. The current study reported that most people think that the disease is caused by a virus. When a newborn piglet is exposed to cold or excitement, and histamine or ephedrine injection can aggravate the disease.
Second, the clinical symptoms of pregnant sows without any abnormal performance, and newborn piglets twitching just after a few hours, accompanied by hind limb weakness, ataxia, a litter of piglets in some or all of the disease, but the degree of severity varies. In general, some patients have milder symptoms. All patients had severe symptoms. Tremor shows a variety of dance movements; and tremors are persistent. The frequency of tremors is reduced in the recumbent region, and tremors stop during sleep. However, tremors appear after standing up. Dogs with severe forelimb vibrations are often dog-ridden and the piglets are difficult to move. Can not eat milk; increased by noise, frightened, chilling, excitement, etc. The disease course varies from pig to pig. Lightness usually returns to normal within 2-8 weeks. Severe tremor is usually due to severe tremors or paralysis of limbs, paralysis, difficulty in starvation due to breastfeeding, or death due to movement disorders. The piglets that have lost tremors can still re-epitrate under conditions of excitement or stress. The general prognosis of alive pigs living a week after birth is good.
Third, the prevention and treatment of the disease there is no effective vaccine and special treatment. Prevention of the disease mainly relies on general health and epidemic prevention measures. Sows are not introduced from pig farms with this disease to prevent all kinds of stress stimuli. When breast milk is not eaten, breast milk must be artificially assisted or artificially breast-feeded. This will allow the majority of diseased piglets to naturally recover and reduce deaths, as well as experimental calcium injections (Vitilin Calcium).
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