Dog Diseases – Canine infectious hepatitis

Dog Diseases – Canine infectious hepatitis

Canine infectious hepatitis is an acute septic infectious disease caused by the canine infectious hepatitis virus. It mainly affects puppies under 1 year old, and often causes acute necrotizing hepatitis. It is often clinically mixed with canine distemper, making the condition more complicated and serious. This disease occurs almost everywhere in the world and is a common canine disease.

At the beginning of the disease, the virus mainly exists in the blood of sick dogs. Later, there will be a large amount of virus in various secretions and excreta, and it will be excreted from the body and pollute the external environment. It can also detoxify from urine for 6-9 months after recovery. Therefore, sick dogs and poisoned dogs are the source of infection of this disease. Healthy dogs are mainly infected through the digestive tract, but also through the placenta.

The virus is very resistant and can survive for a long time under low temperature conditions. It is still pathogenic in the soil for 10 to 14 days, and it can survive for a long time in the kennel. But heating can quickly kill the virus.

Diagnosis points

(1) Popular characteristics Dogs can occur regardless of breed, gender, and season, but it is more common in puppies under 1 year old and in winter.

(2) The initial symptoms of clinical features are very similar to canine distemper. The sick dog is depressed, loses appetite, and has a marked increase in thirst, and even has two forelimbs immersed in water and binge drinking. This is a characteristic symptom of this disease. The body temperature of sick dogs rises as high as 40 C and lasts for 4 to 6 days. Vomiting and diarrhea are more common. If there is blood in the vomit and stool, the prognosis is often poor. Most sick dogs have pain in the sword-shaped soft bones. 7 to 10 days after the disappearance of the acute symptoms, the cornea of ​​some dogs is cloudy. It is white or even blue-white corneal pannus, which is called “hepatitis blue eye” and will disappear after a few days. There are bleeding spots in the gums. Although the disease is called hepatitis, jaundice rarely occurs. If there is no secondary infection, it usually returns to normal within a few days.

According to the above-mentioned epidemic characteristics and I clinical symptoms. A preliminary diagnosis can be made. The final diagnosis depends on laboratory tests of the disease material, such as virus isolation, fluorescent antibody staining, and other specific tests.

Prevention

First, it is necessary to do a good job of kennel hygiene, self-breeding and self-raising, and mixing with other dogs is strictly prohibited.

Second, isolate sick dogs as soon as possible, and treat them with hyperimmune serum or adult dog serum, once a day, 10-30 ml each time. In addition, 20-40 ml of 50% glucose solution, 250 mg of vitamin C or 15-20 mg of adenosine triphosphate should be injected intravenously every day, once a day for 3 to 5 days. To control drinking water, you can feed 5% dextrose saline every 2 to 3 hours.

Third, preventive injections. Injection of five-linked attenuated canine vaccine (rabies, canine distemper, parainfluenza, infectious hepatitis, parvovirus enteritis) and two combined vaccines for canine hepatitis and enteritis. Dogs aged 30 to 90 days are vaccinated 3 times, and dogs older than 90 days are vaccinated 2 times, with an interval of 2 to 4 weeks. Dosage per injection: 2 ml for the five-unit vaccine and 1 ml for the two-unit vaccine, and one year of immunization can be obtained.

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