How to prevent swine fever virus and how to prevent swine fever

Swine fever is an acute, febrile and contact infectious disease caused by the swine fever virus. Acute cases present with sepsis changes; Chronic cases predominantly develop button-shaped ulcers in the large intestine, particularly near the ileocecal space. Therefore, the disease is also called "rotten intestinal plague".

Regardless of age, gender, weight, or season, once a disease occurs in a herd, it will quickly become prevalent in the whole herd, and the mortality rate is high. The average incubation period of the disease is 7 days.

The main manifestations of sick pigs are body temperature rise to more than 41, persistent and unrelenting, depressed, loss of appetite or no food, red eyes, eye sockets, arched back, cold war, walking shaking, often like to drill haystacks. Dry stools at the beginning of the disease and loose stools at the later stage. Boar prepuce with purple or red hemorrhage of different sizes, acupressure does not fade.

In severe cases, bleeding spots are scattered throughout the body, and coughing is common. Some have neurological symptoms, spinning, or suddenly fall to the ground, spasm, or even die.

Autopsy ** spotted hemorrhage, larynx, kidney, bladder have pinpoint-like and millet-like large bleeding points (acupressure does not fade), spleen has hemorrhagic infarction, ileocecal valve has button-shaped ulcer.

Prevention and control measures] At present, there is no effective method for the disease, mainly relying on usual prevention.

1) Regular vaccination, in spring and autumn every year, in addition to a general injection of swine fever rabbit attenuated vaccine for adult pigs, weaned piglets and newly purchased pigs should be vaccinated in time. The swine fever rabbit attenuated vaccine was diluted with normal saline according to the bottle label instructions, and 1 ml of intramuscular injection was injected into all pigs and pigs, and immunity could be produced 4 days after injection.

2) In areas where swine fever is common, piglets are injected once at the age of 21 to 30 days after birth, and once after weaning for piglets at the age of 55 to 60 days, the protection rate can reach 100%.

3) Emergency immunization, in the pig herd where the epidemic has occurred, do emergency preventive injection, can play a role in controlling the epidemic and preventing the spread of the epidemic, the injection can start from the pigs in the surrounding disease-free areas and disease-free pig houses, and then inject the same group of pigs, and the sick pigs are generally not injected. In order to strengthen immunity, the dose can be increased appropriately at the time of injection.

4) Strengthen feeding management, regularly disinfect pigsties, improve the overall disease resistance of pigs, and eliminate the purchase of pigs from epidemic areas. Newly purchased pigs should be isolated for 30 days to confirm that they are disease-free, and can only be mixed after being injected with swine fever vaccine.

5) During the swine fever epidemic, feeding utensils should be disinfected every 3 5 days. After the disinfection of sick pigs, completely eliminate manure and dirt, remove topsoil, pad new soil, and pig manure should be accumulated and fermented. In the early stage of sick pigs, anti-swine fever serum can be tried to inject pigs at a dose of 2 3 ml per kilogram of body weight, injected once a day until the body temperature returns to normal.

The African swine fever vaccine has been developed, and if you are not at ease, you can use the African swine fever detector of Fengtu.

First of all, it is an emergency swine fever vaccine to disinfect the environment, and the best group isolation management for the onset of disease to reduce losses.

At present, there is no special method for swine fever, and comprehensive prevention and control measures based on immunization must be taken. Specific measures include:

1) Vaccination: Qualified areas, pig farming communities and pig farms can use swine fever immunization monitoring methods to carry out timely immunization according to the law of swine fever antibody levels. Immunotiter monitoring methods can be used for indirect hemagglutination assay or enzyme-linked immunosorbent assay for swine fever.

If antibody monitoring is not available, two immunization schedules can be adopted depending on whether sporadic swine fever occurs in the area: aIn areas and farms where piglets are swine fever is sporadic, pre-lactation immunization methods should be used, and piglets should be vaccinated against swine fever before eating colostrum, and each piglet should be injected with 1 serving.

b.In areas and farms where the prevention and control of swine fever is good and there is no sporadic piglet swine fever, the swine fever vaccine can be immunized once at the age of 20 days and 60 days respectively. Gilts for breeding are injected again at the age of 6 months.

Breeding herds are vaccinated against swine fever twice a year. In the process of immunization, the vaccine dose should be sufficient, the needle length should be appropriate, and no flying needles should be given to ensure the immunization effect.

2) Quarantine and purification: regularly monitor the blood collection of breeding pigs, and identify and eliminate pigs with strong antibodies to swine fever and pigs with multiple immunosuppression, purify the pig herd, and eliminate the hidden danger of swine fever.

3) Strengthen vaccine management: Vaccines are purchased from the main channels. The vaccine is diluted and used, and the vaccine should not be separated from the ice bucket and the bucket should be kept from the ice to ensure that the vaccine is effective, and it is strictly forbidden to use expired vaccines and vacuum-losing vaccines.

4) Strengthen the disinfection of needles, needles and injection sites used in immunization to reduce the spread of man-made diseases.

5) Emergency vaccination: emergency vaccination should be taken in the affected areas and fields, and the vaccine dose should be appropriately increased (can be increased by 1 3 times) to reduce the incidence of disease and control the spread of the epidemic.

6) Strengthen the treatment of sick and dead pigs: isolate suspected sick pigs. Dead pigs and pollutants must be treated harmlessly, and it is strictly forbidden to eat them.

7) Strengthen the disinfection of the environment inside and outside the venue: the whole site environment is disinfected once every month or half a month; At least once a week, the pig house is disinfected with pigs; Feeding utensils are disinfected every 2 3 days; The disinfection pool at the entrance of the field and the entrance of each building should be changed frequently to keep the disinfectant effective.

8) Strengthen management and improve the individual disease resistance of pigs. Provide the best living conditions, protect against the cold in winter, prevent heat in summer, and have fresh air in the house.

9) adhere to self-breeding, it is strictly forbidden to purchase commercial pigs, the introduction of breeding should be introduced from non-epidemic areas, after the introduction of quarantine observation for more than 1 month, swine fever virulent antibody negative, swine fever vaccine immunization can only enter.

First of all, disinfect 3-5 times a day, during which the pathogenic microorganisms of the pig farm should be thoroughly purified, continuously disinfected for about 7 days, and then reduced to 1 disinfection per day to prevent the pathogenic microorganisms from coming in, until the end of the swine fever, and then insist on disinfection for more than 15 days, and then return to the normal disinfection time, the gate disinfection pool can be diluted with glutaraldehyde 1:1000 times for spray disinfection, and vehicle disinfection can be diluted with glutaraldehyde 1:1000 times for spray disinfection. Then use astragalus mixture or water to fight viruses daily.

Pig farmers to effectively prevent swine fever must first strengthen the management of feeding, add mold remover to the feed, do a good job in feed mold repellent, in one is to enhance the pig's own immunity, can be used under astragalus, multi-dimensional and so on. It is also necessary to disinfect and clean the pigsty regularly. The better disinfection brands include potassium persulfate or glutaraldehyde methylammonium bromide, etc., and secondly, it is necessary to ensure that the temperature of the pigsty is suitable and good ventilation.

After the diagnosis of swine fever, the pig herd should be inspected first, and the sick pigs should be immediately removed, killed and incinerated or deeply buried.

Isolation and disinfection of sick pig houses; Emergency vaccination of pigs against swine fever in areas where the disease has not yet become ill or threatened. It should be noted that the incidence and mortality of pigs that have been in the incubation period of infection may be accelerated after vaccination, but emergency vaccination can effectively stop the development of swine fever to a certain extent, shorten the epidemic process and reduce economic losses.

Pig farms and feeding management utensils must be strictly disinfected, and 2% sodium hydroxide disinfection effect is better.

Swine fever precautions

1. For farms or areas where pigs must be introduced, the pigs should be fully understood and their health conditions should be fully understood to avoid the introduction of the disease. In addition, personnel and vehicles should be disinfected to prevent the mechanical introduction of the disease.

2. It is necessary to do a good job in vaccination, formulate a strict immunization plan, and ensure vaccination density and regular immunization. During the transportation, storage and use of vaccines, the relevant instructions should be strictly followed to prevent the titer of the vaccine from decreasing or failing.

3. Conscientiously do a good job in veterinary health work and strengthen feeding management.

After <> found swine fever, it is necessary to report to the local animal husbandry department as soon as possible, and if you can't find the contact for a while, you can also report the situation to the local community, police station, 110, etc., and isolate the pig farm from the outside world to avoid the spread of the epidemic.

happensSwine feverIt is necessary to report to the local epidemic prevention department immediately and make a diagnosis in a timely manner. Then the epidemic area will be blocked, the sick pigs and dead pigs will be harmless, and other healthy pigs will be injected with relevant vaccines. Finally, the epidemic area of Yunna should be disinfected and treated harmlessly.

1.Vaccinations.

The first limb is injected intramuscularly, and the high-heat gold needle is injected per kilogram, with Bupleurum and a high content of ceftiofur sodium.

The next day, Bupleurum is injected intramuscularly with a high content of ceftiofur sodium.

On the third day, if you have a fever, you can get another injection of high-heat gold injection, with Bupleurum and ceftiov sodium.

On the fourth day, observe for a day.

On the fifth day, you can get vaccinated against the local epidemic.

On the sixth day, you can see obvious results, with a ** rate of more than 90%.

2.After confirming the active immunization of swine fever vaccine, the emergency swine fever vaccine of the whole pig should be tested in time. The immunization dose is 10 servings per head.

When using the vaccine, injections should be given using genetically engineered leukocyte interferon for pigs. The use of genetically engineered interferons for swine and swine fever vaccines has been shown to accelerate the production of antibodies specific to swine fever and can increase the level of humoral antibodies in a non-specific manner.

3.The use of Chinese herbal preparations, vitamin preparations for assistance**.

In the process, the correct use of immune-promoting Chinese herbal medicine preparations and vitamin preparations can enhance the physical condition of sick pigs, promote the recovery of sick pigs, and greatly help sick pigs recover as soon as possible. You can choose such as: Astragalus polysaccharides, licorice mixture, VB1, VC, VB12, etc.