How to tell if a pig has African swine fever and how to see if a pig has African swine fever

Judging from the following aspects:

1. Clinical symptoms: the body temperature of the sick pig is elevated, the spirit is not high, often undercover and immobile, unwilling to move, and it is difficult to breathe. Some sick pigs have purple spots on the ears, nose and feet and other parts of the body, and a few sick pigs will have unsteady standing, bloody stool, and convulsions.

2. Autopsy symptoms: African swine fever affected pigs, after death, dissect them, it has a very typical symptom, that is, the spleen is swollen and dark red in color. Combined with clinical symptoms, if there are such symptoms, the sick pig is likely to be infected with non-plague.

3. Laboratory diagnosis: If you need to confirm the diagnosis, you need to carry out laboratory diagnosis on the sick pigs, take samples, and if you are infected, you can detect African swine fever virus.

The following methods can be obtained: first, observe whether the pigs have multiple anorexia and fever and fall to the ground, and stand and tremble in hind limbs.

First, after the illness of the pig arch do not eat, fever and then cooling, ** red purple, and people sick, once the pig suffers from African swine fever, appetite will be greatly reduced.

They will lose their appetite when they eat the feed, and will only use their noses to arch the feed, but they will not actually eat the food. If the farmer finds that his pigs have a poor appetite, they need to be vigilant.

Second, sows suffering from African swine fever will have symptoms of abortion. If a normally pregnant sow suddenly shows symptoms of abortion, the farmer needs to pay extra attention! This is especially true for sows in the second or third trimester of pregnancy.

African swine fever causes sows to deteriorate in physical fitness and are unable to nurse their foetuses.

1. Red blood cell adsorption test: white blood cells of healthy pigs.

Plus African swine fever.

Extracts of blood or tissue from pigs,37 cultures, as seen many red blood cells adsorbed to white blood cells, forming rosettes or mulberries.

body, it is positive.

2. Direct immunofluorescence test: fluorescence microscopy.

Observe as seen in cytoplasm.

If there is a bright fluorophore inside, it is positive.

3. Animal inoculation test.

4. Indirect immunofluorescence test: African swine fever virus is inoculated in overgrown vero cells.

on a coverslip and prepare a control of uninoculated VERO cells. After the test, the control was normal, and the bright fluorophore nuclear fluorescence dots in the cytoplasm of the sample to be tested could be judged to be positive.

5. Enzyme-linked immunosorbent assay.

When the control is established (the absorption value of the positive serum control is greater than that, the absorption value of the negative serum is less than that, and the absorption value of the sample to be tested is greater than that, it is judged to be positive.

6. Immunoelectrophoresis test: the antigen can be judged to be positive if there is a white precipitation line between the serum to be tested.

7. Indirect enzyme-linked immunoassay (ELISA) test: observed with the naked eye or under the microscope, if the spot is brown, it is positive, and if it is colorless, it is negative.

Rapid detection method for African swine fever.

The African swine fever detection method can be used as a PCR assay, which can provide rapid and accurate qualitative detection of target nucleic acids in analytes or other analytes taken from the sample to be tested.

The following symptoms can be compared to determine whether the pig is suffering from African swine fever.

1. When the sick pig begins to have a fever, the body temperature will reach about 40-42 °C, and it will be red, conjunctival flushing, hyperemia, body surface bleeding, blood stasis, listlessness, and the symptoms of the lower abdomen, limbs, buttocks and other parts of the sick pig will be particularly serious.

2. Sick pigs will also have panting, coughing, dyspnea, lymph nodes, gastrointestinal mucosa, and kidney bleeding. Moreover, there is a decrease in appetite or even abolition, dry and hard feces, or constipation, purulent blood feces, and the eyes and nose of sick pigs will have serous and mucus substances flowing out.

3. When the sow is infected, there will be infertility, abortion and even stillbirth, etc., after the death of the sick pig, the autopsy can find that the lungs, liver, spleen and other organs and lymph nodes are seriously enlarged, and there is generally bleeding, stasis, etc.

4. In the case of acute onset, the mortality rate of this disease is very high, especially sows and large pigs will die quickly.

How to deal with African swine fever in pigs

If pigs suffer from African swine fever, it generally cannot be effective, because African swine fever is a very contagious disease, and it must be reported to the local authorities as soon as it is found. Generally, after being confirmed to be infected with African swine fever, the superior department will send professional personnel to isolate the sick pigs, or cull and destroy them. Pig farms must do a good job of disinfection, because the final result of pigs infected with African swine fever is death, so it must not be handled without authorization.

The flesh of the African swine fever pig is very gray, which is different from the bright color of normal pork.

2.The smell of sick and dead pigs is a pungent fishy smell, and normal pork does not have these tastes. Although African swine fever is fatal to pigs, it is not a zoonotic aura-hidden epidemic, this epidemic after more than 50 degrees in Liang Hall, and more than half an hour, or after the laughing scum said more than 60 degrees, the virus will be killed in 15 minutes.

There is no obvious way to identify African swine fever. However, if there are sick pigs in the sedan fruit pig house, which are red or purple, accompanied by symptoms such as increased body temperature, rapid heartbeat, diarrhea, vomiting, decreased vitality, loss of appetite, and weakness of limbs, it is possible that African pig dismantling plague has occurred. If there are pigs in the barn with the above symptoms, it is recommended to isolate immediately, and then carefully clean and disinfect the barn.