At present, the epidemic situation of African swine fever has been highly concerned by people. Food is the most important thing for people, so how can delicious and nutritious meat be missing from people's table? So do you know what African swine fever is? What are the symptoms of African swine fever? How can people prevent and control African swine fever?

First, African swine fever

African classical swine fever is an acute, highly contagious viral swine disease, which is listed as a legally reported animal disease by the World Organization for Animal Health. It is characterized by a short course of onset, a mortality rate as high as 100%, and clinical manifestations such as fever (up to 40-42℃), rapid heartbeat, dyspnea, partial cough, serous or mucinous purulent secretions in eyes and nose, cyanosis of skin, and obvious bleeding in lymph nodes, kidneys and gastrointestinal mucosa. The disease only infects pigs under natural conditions, and pigs and wild boars of different ages, sexes and breeds are susceptible. The first case of African swine fever was diagnosed in China on August 3, 20 18.

Second, the symptoms of African swine fever

The incubation period of natural infection is 5-9 days, often shorter, while that of clinical experimental infection is 2-5 days.

1, at the time of onset, the pig's body temperature rose as high as 4 1℃ for about 4 days, died 3-6 days after infection, and decreased 48 hours before death;

2. Leukopenia in sick pigs, especially lymphopenia;

3. The hairless parts of ears, nose, armpits, abdomen, perineum, tail and feet of sick pigs are purple spots with obvious boundaries;

4. The larynx and epiglottis have ecchymosis congestion and diffuse bleeding;

5, autopsy appeared splenomegaly, black, brittle symptoms. Lymph nodes are swollen, brittle, fragile, bleeding and shaped like black hematomas.

Third, the prevention and control of African swine fever

At present, there is no vaccine that can effectively prevent African swine fever in the world, but high temperature and disinfectant can effectively kill the virus, so it is the key to prevent and control African swine fever to do a good job in biosafety protection of farms.

1, strictly control personnel, vehicles and susceptible animals entering the farm, and strictly implement disinfection measures for personnel, vehicles and articles entering and leaving the farm and its production area.

2. Keep pigs as close as possible, take isolation and protection measures, and try to avoid contact with wild boar and soft ticks.

3, it is forbidden to use swill or meal waste to feed pigs.

4, should actively cooperate with the local animal disease prevention and control institutions to carry out disease monitoring and investigation, especially the occurrence of classical swine fever vaccine immunization failure, unexplained death and other phenomena, need to be reported to the local veterinary department in a timely manner.

The above is the introduction of African swine fever, symptoms and prevention and control measures. Do you know more about African swine fever? In addition, African swine fever is not a "human and animal disease", it only infects pigs, not people. Therefore, we should not be too worried and afraid.