What is the incubation period of ASF? How do I detox?

The incubation period of African swine fever is generally about 5 to 19 days, and the length of the incubation period is related to many factors such as the viral impact of swine fever virus and the disease resistance of infected pigs. At present, there is no ** swine fever drug, if you find an infected sick pig, you must contact the local department as soon as possible to sanitize the treatment.

Because the disease of African swine fever is highly contagious, once there is a suppression of the disease, there may be a large area of infection and related death symptoms, in response to this situation, we must use scientific and reasonable methods to sanitize as soon as possible, reduce economic losses to a minimum, and at the same time report to the ** department, seek professional help.

What is African Swine Fever?

African swine fever refers to an acute infectious disease caused by the African swine fever virus through insect transmission and contact between sick pigs and domestic pigs. This disease was first reported in Kenya, Africa in 1921, and the World Health Organization listed it as a legally notifiable animal disease after investigation, and the disease is also an animal infectious disease that China focuses on preventing in the process of livestock breeding. Many pig farmers and farmers need to have a high enough sense of vigilance and prevention.

The incubation period of African swine fever is generally around five to nineteen days.

This disease is characterized by a short course of onset, acute infection and mortality of up to 100%, accompanied by symptoms such as increased body temperature, bleeding spots, low appetite or vomiting in sick pigs. It is an animal-borne disease with significant biological impact. The incubation period is generally 5 to 19 days, and the amount of incubation period is related to the antiviral ability of sick pigs and the spread of the virus.

The virus does not begin to be shed after the end of the incubation period, but is excreted by sick animals before clinical symptoms appear. Once the herd shows clinical signs, it means that the herd is infected. <>

At present, there is no special drug for swine fever, and the diseased pigs should be sanitized as soon as possible.

In the existing investigation and research, there is no specific drug related to swine fever, once the domestic pig is infected, it must be isolated from the healthy pig herd as soon as possible, and request the ** department to send professional epidemic prevention personnel to sanitize and treat the animals, so as to reduce the economic losses of farmers. <>

According to relevant information, the incubation period of African swine fever is about a week; Pay attention to environmental hygiene, take frequent baths, disinfect the pigsty regularly, and clean up the weeds accumulated in the pigsty frequently.

According to relevant data, the incubation period of African swine fever is about one week, pay attention to environmental hygiene, bathe frequently, regularly eliminate the pigsty, and often clean up the weeds accumulated in the pigsty.

The incubation period is about 15 days; It is necessary to disinfect the environment, to grasp the hygiene, and to treat the infected poison harmlessly.

Generally around 5 19 days, the incubation period is very long. Until now, I haven't found a suitable detox.

1. African swine fever virus, according to its different pathogenicity, can be divided into three categories: high pathogenicity, moderate pathogenicity and low pathogenicity. High-lead pathogenic strains can cause severe acute illness and reach a mortality rate of 90-100% 4-15 days after infection.

Moderately virulent strains have a mortality rate of 30-70%; The mortality rate of the less pathogenic strain is 10-30%.

2. Whether the pigs surviving after low-level infection take the pigs for a long time and detoxify the outside world is the focus of long-term debate. Friedrich, Germany.

Institute of Diagnostic Virology, Loeffler Institute.

of the researchers gave their own experimental conclusions.

3. The results showed that the pigs infected with the moderately virulent Netherlands'86 strain showed clinical symptoms within 4-6 days, and the severity varied, including acute death, delayed death, chronic disease, and final recovery. Viremia appears after a few days of infection (as early as 3 days), which can be detected by PCR, HAT test and other methods, and at the same time detoxification begins, and the virus can be detected in the mouth and saliva on the 3rd day, and a little later in the stool; ASFV antibody (p73 specific.

antibodies) appear later.

4. However, the surviving infected pigs will not carry the virus for a long time, but over time, the viral load will gradually decrease, and finally completely eliminated. A negative HAT test result will be the first to appear, and the qPCR result will also turn negative, and healthy pigs will not be infected if they are mixed with surviving infected pigs after 99 days of infection. However, the infected pigs that survive do not produce effective neutralizing antibodies.

<> According to the "Technical Specifications for the Harmless Treatment of Dead and Diseased Animals", African swine fever virus is not resistant to high temperatures, and can be inactivated after heating for 30 minutes at a temperature of 70. The incubation period of African swine fever spans a wide range, generally about 4-19 days. Among them, the incubation period of natural infection is 5-9 days, which is often shorter; The incubation period of clinical experiments is 2-5 days, and the specific length of the incubation period is related to the virulence of African swine fever virus and the disease resistance of infected pigs.

1. How much temperature can African swine fever virus kill?

1. It is difficult for African swine fever virus to survive at high temperatures, according to the relevant guidance of the "Technical Specifications for the Harmless Treatment of Sick and Diseased Animals", African swine fever virus can be inactivated by heating for 30 minutes at a temperature of 70, and can be easily killed under normal cooking conditions.

2. African swine fever virus has strong resistance to the external environment, low temperature resistance, but not high temperature resistance, can survive for a long time in blood, feces, undercooked pork products, cured meat and swill, and can survive for several years or even decades in frozen meat, so when feeding pigs, the food must be fully heated and cooked thoroughly, so as to kill African swine fever virus, so as not to cause irreparable losses.

2. How long is the incubation period of African swine fever?

1. The incubation period of African swine fever spans a large range, generally about 4-19 days. The incubation period for natural infection is 5 to 9 days, often shorter; The incubation period for clinical trial infection is 2-5 days. The length of the incubation period is related to the virulence of the African swine fever virus and the disease resistance of the infected herd.

During the incubation period, the sick pigs have a slight reduction in food or a decrease in eating intention, but because they continue to eat, they are not easy to be detected by the breeders.

2. African swine fever is an acute, hemorrhagic and virulent infectious disease caused by African swine fever virus infecting domestic pigs and various wild boars (such as African wild boar, European wild boar, etc.), which seriously endangers the global pig industry, and pigs of all breeds and ages can be infected, with morbidity and mortality up to 100%.

The survival time is about 105 days for raw and ground meat, 182 days for salted meat, 0 days for cooked meat (at least 30 minutes at 70 minutes), and 1000 days for frozen meat. In feces, the survival time is 11 days.

1. How long is the longest incubation period of African swine fever?

1. Incubation period.

The incubation period of African swine fever is about 5-19 days. The incubation period for natural infection is about 5-9 days, or even shorter, while the incubation period for clinical trial infection is about 2-5 days.

2. Virus survival time.

1) In raw meat and ground meat, the survival time is about 105 days. In salted meat, the survival time is about 182 days. In cooked meat (at least 30 minutes at 70 minutes), the survival time is 0 days.

In dried meat, the survival time is about 300 days. In smoked meat, the survival time is about 30 days. In frozen meat, the survival time is about 1000 days.

In frozen meat, the survival time is about 110 days. In the internal organs, the survival time is about 105 days. **, fat, the survival time is about 300 days.

4 The survival time of blood stored in the environment is about 18 months. In feces (room temperature environment), the survival time is about 11 days. In decaying blood, the survival time is about 15 weeks.

In the contaminated pig house, the survival time is about 30 days.

2) African swine fever is not resistant to high temperatures, and is very sensitive to strong acids and alkalis. When the temperature is 56, heating for 70 minutes can kill the African swine fever virus. When the temperature is 60, heating for about 30 minutes can make the ASF virus inactive.

2. What are the characteristics of African swine fever?

1. Hyperacute type.

Without any symptoms, the sick pig died suddenly.

2. Acute type.

The body temperature of the sick pig rose to about 42, the spirit was depressed, the desire to eat decreased, and there were bleeding spots and cyanosis in the ears, limbs and abdomen. Sticky pus discharge from the eyes and nose, vomiting, constipation, stool covered with blood and mucus, stiffness of movement, difficulty breathing.

3. Subacute type.

The body temperature fluctuation of sick pigs is irregular, often greater than that, respiratory distress, wet cough, joint pain and swelling.

4. Chronic type.

Sick pigs have difficulty breathing, emaciation, slow growth rate, weak physique, swollen joints, local ulcers, necrosis.

<>, the incubation period of African swine fever is about 4-19 days, and the length of the incubation period is related to the virulence of African swine fever virus and the disease resistance of infected pigs. Prevention and control measures: prohibit outsiders, vehicles and other poultry from entering the farm; Disinfection measures should be taken for the feed and utensils of the farm, and the farm should be closed when the disease breaks out; Regularly eliminate insects in the farm to prevent the spread of the virus, and feed them with safe and healthy feed.

1. How long is the incubation period of African swine fever?

1. The incubation period of African swine fever.

The incubation period of African swine fever is generally about 4-19 days, and the incubation period refers to the time when the virus invades the body to show clinical symptoms. The virulence of African swine fever virus is divided into low virulence (the longest incubation period, the latest onset, which will cause subacute, chronic, or inconspicuous onset), moderate virulence (the incubation period of the strain is medium, and the clinical symptoms are reduced compared with the acute, which will cause chronic or inconspicuous symptoms), strong virulence (the incubation period is relatively short, and the clinical symptoms will show acute symptoms, ** bleeding spots, anorexia or vomiting, and increased body temperature, Case fatality rate is as high as 100%).

2. Prevention and control measures.

1) prohibit outsiders, vehicles and other poultry from entering the farm, do not raise pigs, wild boars or external insects will cause pig disease, observe the situation of pigs at any time, such as vomiting, high fever, diarrhea, redness on the body, to do a good job of isolation, early treatment to reduce losses.

2) Farm feed, utensils, etc. should do a good job of disinfection measures, when the outbreak of disease closed farms, reduce viruses, insects and other wild poisons, etc., low immunity pigs are prone to disease, timely vaccination and disinfection with alkali or poison is also very important.

3) Regularly eliminate insects in the farm to prevent the spread of viruses, and at the same time feed safe and healthy feed. Regular preventive injection, spring and autumn every year, in addition to adult pigs generally carried out a swine fever rabbit attenuated vaccine injection, weaned piglets and newly purchased pigs should be timely epidemic prevention injection, newly purchased pigs should be isolated for 30 days, confirmed disease-free, and injected swine fever vaccine can be mixed after the group, swine fever often epidemic area, piglets are born 21-30 days old injection once, 55-60 days old piglets weaned and injected again.

2. Typical symptoms of swine fever

1. The typical symptoms of swine fever include fever, temperature as high as 40-42, conjunctival flushing, hyperemia, redness, mental atrophy, body surface bleeding, blood stasis, and especially serious in the lower abdomen, limbs, buttocks, perineum and other parts; Sick pigs have coughing, wheezing, dyspnea, lymph nodes, kidneys, gastrointestinal mucosal bleeding, vomiting, loss of appetite or abolition, dry and hard feces, constipation or purulent bloody stool, and serous or mucinous purulent discharge in the eyes and nose.

2. Sows will also be accompanied by infertility, abortion, stillbirth, necropsy of dead pigs will find that the spleen, liver, lungs and other organs and lymph nodes are seriously enlarged, and extensive bleeding and stasis, the mortality rate is very high when the disease is acute, especially sows, large pigs die faster.