Dog Diseases – Pseudorabies
Pseudorabies is an acute infectious disease that can be infected by a variety of domestic and wild animals. Pigs occur more frequently in domestic animals, but dogs can also be infected. When an outbreak of this disease occurs in a pig herd on a pig farm, dogs often develop the disease before or at the same time as pigs. Its pathogen is pseudorabies virus. Because this disease has similar symptoms to rabies, it was previously thought to be the same disease as rabies. Later proved that this disease and rabies are not the same disease, but an independent disease.
Pseudorabies virus mainly exists in sick pigs and detoxifies with nose juice, saliva, urine, milk and vaginal secretions. Therefore, sick pigs are the source of infection for various animals. Dogs are often infected after eating sick pork or sick and dead mice. Although sick dogs have a high fatality rate, they cannot detoxify outwards. The disease is mainly infected through the digestive tract, but it can also be infected through the respiratory tract and skin wounds.
Pseudorabies virus is very resistant to the external environment. The virus in sick animal meat can survive for more than 5 weeks. However, the virus has little resistance to chemicals. Commonly used disinfectants such as 0.5% lime milk, 0.5% hydrochloric acid, sodium hydroxide, formalin, etc. can quickly kill them.
(1) Epidemiological characteristics Pigs and mice are the most important sources of infection of this disease, and other animal infections of this disease are mainly related to contact with these two types of animals. The natural infection of dogs is related to the contact with poisonous pigs or eating rodents infected with this virus. Eating cattle and lamb infected with this disease is also a secondary way of infection. In addition, it can also be infected through droplets and wounds. The disease is mostly sporadic, and some presents a regional incidence.
(2) Clinical characteristics At the beginning of the disease, depression, curled up and unhappy, indifferent to surrounding things, often changing positions, first staring and rubbing the skin, and soon increased itching, even unbearable itching and violent restlessness, often onset of biting Serious damage is formed locally.
The sick dog barked for no reason and did not respond to the call. It liked to hide in the dark. After a while, it fell to the ground and foamed at the mouth, had difficulty breathing, showed intermittent convulsions, and died soon. Although sick dogs have violent symptoms, they do not attack humans and other animals. In some sick dogs, skin itching symptoms are not obvious, or even absent, only the above-mentioned neurological symptoms appear, and they die soon.
A preliminary diagnosis can usually be made based on the above-mentioned clinical features (exotic itch, neurological symptoms, local scratches, bites, etc.) combined with epidemic characteristics. For those cases with atypical symptoms, it is difficult to make a diagnosis based on clinical diagnosis alone. Disease materials such as brain, liver, spleen, lung and other organs must be taken and sent to the inspection department for testing.
First, dogs are strictly prohibited from entering the pig farm.
Second, pay attention to the anti-rodent and anti-rodent work inside and outside the kennel, and strictly prevent dogs from eating dead rats.
Third, sick dogs should be isolated in time. If possible, the dog can be injected with a hyperimmune serum against pseudorabies, which has a certain effect.
The feces and urine of sick dogs should be cleaned and disinfected in time. The kennel can be disinfected with 2% sodium hydroxide solution, and the corpse should be buried deeply.
Fourth, vaccination should be carried out according to the contact between dogs and pigs and the situation of eating pork. In the epidemic area, the “pseudorabies attenuated vaccine” can be used to inject 0.2 ml intramuscularly into dogs over 4 months of age; 0.5 ml for dogs over 1 year old, and another vaccination 3 weeks later at a dose of 1 ml.