Early symptoms of African classical swine fever in sows
Among pigs, female pigs of any age who have given birth are called sows. Today, I would like to introduce the early symptoms of African classical swine fever in sows.
I. early symptoms of African classical swine fever in sows
The early symptoms include elevated body temperature, dyspnea, rapid heartbeat, cough, cyanosis of the skin and loss of appetite.
II. The difference between African classical swine fever and ordinary classical swine fever.
1. Communication characteristics
Classical swine fever: only contact will spread, and only under certain conditions will be infected, almost any time, any size of pigs can be infected.
African classical swine fever: not only through contact to spread, it can also be transmitted through a variety of insects, pests and so on.
two。 Characteristics of the disease
Classical swine fever: the difference of virus strains directly determines the severity of the disease. Classical swine fever mainly occurs in a variety of small and medium-sized farms in China, but it basically does not spread to the outside, and pigs that have been vaccinated before breeding rarely get sick.
African classical swine fever: spread widely, mainly because its transmission medium is too wide, when the virus strain is high, it can cause all sick pigs to die within a week, and there is no effective vaccine.
3. Symptoms of onset
Classical swine fever: after the illness of sick pigs, there will be mental depression, a substantial decrease in appetite and a rapid rise in body temperature. Appear soft legs, unable to stand and walk, paralysis and other neurological symptoms.
African classical swine fever: the incubation period of African classical swine fever is about a week, and the body temperature of diseased pigs soars to 40 degrees or more. There will also be coughing, runny nose, shortness of breath and other respiratory problems, leading to premature delivery or abortion of pregnant pigs, the mortality rate can be as high as 100%.
There are many breeds of domestic sows, such as Taihu pig, Landrace pig, large white pig, Erhualian pig, Jinhua pig, Duroc, Pitland, Rongchang pig and so on.
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