The following issues should be paid attention to in the prevention and control of African swine fever

Among the pig breeding in our country, African swine fever is a major infectious disease that affects its safety and has serious harm. African swine fever has a short course of disease, and it has a very high mortality rate from acute infections, which is very fatal to pigs. The infectious disease can occur all year round. This article briefly analyzes some daily measures to prevent and treat swine fever for your reference and study.

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(1) Transporting live pigs and their products in different places

In my country, the production area and sales area of live pigs are often separated. Consumers generally need hot fresh meat. In order to meet the needs of consumers, a large number of live pigs will be transported long distances from the production area to the sales area. African swine fever has a long incubation period. If a pig is infected, the longest incubation period is 3 weeks. During this period, there will be no clinical symptoms. In this way, if there is an infection in a pig during the long-distance transportation, The virus will spread rapidly during the incubation period. Relevant investigations and studies have shown that there have been 38 epidemics caused by the transfer of live pigs and their products from other places. Need to attract enough attention.

(2) Feeding pig food leftovers

In pig breeding, there are common food leftovers from feeding pigs. In the process of slaughtering or processing virus-carrying pigs, swill and leftovers will increase the risk of transmission. Relevant investigations and studies have shown that there are 55 epidemics caused by this type of feeding, which has become the most important issue of African swine fever in my country. Way of diffusion.

(3) The critical period for the window period to induce African swine fever

The high-risk window period for African swine fever prevention and control includes five key window periods, including pig heat, breeding, farrowing, weaning, and transfer to herd. The methods of each link are also very different. For example, during the breeding and delivery of live pigs, the frequency of contact between humans and live pigs is high. If the management personnel do not do a good job in disinfection of tools and environmental treatment, it may accelerate the spread of African swine fever;

In the stage of weaning and transferring pigs, if the passage of pigs is not thoroughly cleaned and disinfected, it will also increase the residual virus in the environment and cause secondary infection.

When the pigs are transferred to the group, due to the changes in the breeding environment and methods, the resistance of the pigs changes, which in turn produces a strong stress response. For example, the intestinal flora of pigs is disturbed, which provides conditions for the parasitic of viral microorganisms. With the increase of free radicals in pigs, the permeability of their biofilms increases, and the probability of infection of viral infectious diseases such as African swine fever increases.