1. What is African swine fever?
African swine fever is an epidemic disease that can infect domestic pigs, wild boar and other pigs. It is an acute, hemorrhagic and severe infectious disease, and it is a kind of epidemic situation that China focuses on preventing. The onset time of African swine fever is short. Once the fever reaches 40-42℃, the pig's heartbeat will be accelerated and it will be difficult to breathe, which will mainly harm the spleen, lymph nodes, liver, kidney and heart of the pig. The incubation period is 4 days to 19 days, and the mortality rate of pigs with acute infection will reach 100%.
2. What are the main transmission routes of African swine fever?
The source of African swine fever may be related to infected pig products that have not been treated at high temperature in airports, ports and other import channels. Their tissues and organs, secretions, excreta, blood and so on all contain viruses, which can pollute pig houses, utensils, bedding, feed, vehicles and so on. Healthy pigs are mainly infected through contact with sick pigs and feed, drinking water and kitchen waste contaminated by viruses. In addition, other insects such as ticks carrying African swine fever virus can also spread African swine fever virus by biting healthy pigs.
At present, there is no effective drug treatment and no related vaccine prevention. Only by strengthening the supervision and testing of pigs, strict closed management of pig farms and disinfection and isolation of pig houses. In order to prevent sick pigs from infecting healthy pigs, once the epidemic situation is found, the sick pigs should be blocked, isolated, culled, disinfected and treated harmlessly to prevent the spread of the epidemic situation from affecting other healthy pigs.
It is necessary to ensure that the articles used by pigs, the feed they eat and the water they drink are healthy and pollution-free, strengthen the air circulation in pigsty, reduce the breeding density and prevent insect bites. Local quarantine agencies should strengthen management and registration, do a good job in the investigation of sick pigs, and strengthen veterinary inspection.
3. How long is the incubation period of African swine fever virus?
The incubation period of African swine fever is 4- 19 days. There is no sign of African swine fever incubation period, and the pig farm can't detect the arrival of African swine fever, and then the pig farm does various activities as usual. For example, pig transportation, pig sales, pig breeding, etc., so that at the time of onset, almost all pig farms were pigs carrying viruses, and even other pig farms were implicated.
Generally speaking, African swine fever has a wide transmission route, which can pollute pig houses, utensils, bedding, feed and vehicles from tissues and organs, secretions, excreta and blood, and then spread to normal pigs. It is difficult to control, with a general incubation period of 4- 19 days and early asymptomatic.