What are the symptoms of foot-and-mouth disease in pigs? How to treat it? How long does it usually take? What are the prevention and control measures?

One outbreak of swine foot-and-mouth disease occurred in Xinping Yi and Dai Autonomous County of Yunnan Province and Gangnan District of Guangxi respectively, the Information Office of the Ministry of Agriculture and Village announced on June 27. After the outbreak of the epidemic, Yunnan and Guangxi carried out comprehensive investigation and emergency surveillance around the transferred areas, and earnestly did a good job in livestock immunization and disinfection. What are the symptoms of foot-and-mouth disease in that pig? How to treat it? How long does it usually take?

In 2018, due to the low pig price market and the impact of environmental protection demolition, there is a large turnover of personnel and pigs, and some pig farmers have relaxed the work of disease prevention and control, so in this critical period, pig farms should strengthen disease prevention and control management.

Main clinical symptoms of type O foot-and-mouth disease in pigs

Popular features:

MYA98 pedigree virus is highly infectious, has a wide range of hosts and spreads quickly.

Main clinical symptoms:

Blisters and ulcers (rotten spots) were formed in oral mucosa, tongue, nasal endoscope, hoof fork, hoof crown and nipple of diseased pigs. the mortality of young animals was high, mainly showing myocarditis and tiger spot heart.

How to treat a pig with foot-and-mouth disease?

1. First of all, strengthen feeding management, winter pig houses in order to keep warm and moistureproof will be laid bedding grass, bedding grass should be changed frequently. There are many bacteria and viruses in winter, piggery and utensils should be disinfected regularly.

two。 The serum of foot-and-mouth disease virus prevalent in this area was used for vaccination.

3. Wash the festering area with 0.5% potassium permanganate, apply iodine glycerin, or spray the wound with iodine tincture.

4. Seriously ill pigs with high fever can be injected with aminopyrine + cephalosporin to reduce fever, and Agent 5 of 0.15ml will be injected per kilogram of body weight to treat foot-and-mouth disease.

5. Some sick pigs may suffer from myocarditis and give as few injections as possible, so sick pigs with mild symptoms can be treated with drugs such as Huanglian jiedu powder and amoxicillin, and the feed intake of pigs decreases after the disease. glucose and vitamins can be added to drinking water to replenish energy.

How long does it take to recover from foot-and-mouth disease in pigs?

Foot-and-mouth disease in pigs generally shows a benign process, which can be cured in about a week; if there is a disease in the hoof, it can be extended to 2 mi for 3 weeks or more; the mortality rate is 1% mi 2%, and the type of disease is called benign.

Prevention and control strategy of type O foot-and-mouth disease in pigs

Prevention and control countermeasures:

1. Immune prevention is the core of vaccine immunization, on the one hand, it can enhance the animal's ability to resist the epidemic disease, on the other hand, it can reduce or alleviate the epidemic and occurrence intensity of the epidemic disease. After testing by the National foot-and-mouth Disease reference Laboratory, all the foot-and-mouth disease vaccines procured by the Chinese government have protection against MYA98 lineage virus. In order to obtain good protective effect, considering the response characteristics of pigs to foot-and-mouth disease vaccine, it is suggested that under the current situation, farms (households) should strengthen immunization to all pigs once. Fattening pigs were immunized once, that is, 30-35 days old, 70-75 days old, 90-100 days old, so as to obtain better protective effect.

two。 It is the key to eliminate the source of infection by forcing the culling of diseased livestock, livestock in the same group and livestock that may be infected, and to take harmless measures such as deep burial and incineration to thoroughly disinfect the contaminated pig houses, articles and environment, and quickly eliminate the source of infection.

3. Strictly controlling the movement of epidemic foci, restricting the movement of livestock and their products and other poisoned substances, and cutting off the route of transmission are effective measures to avoid the spread of the epidemic.

4. Strengthen the surveillance and epidemiological investigation of the epidemic situation, detect the hidden dangers of the epidemic in time, and reduce the risk of epidemic diseases.

Prevention and control measures:

Do a good job in daily prevention: prevention is the key to reducing the incidence of foot-and-mouth disease in pigs, and the following measures should be taken:

Disinfect. Disinfection is the focus of daily prevention work, choose sensitive disinfectants for foot-and-mouth disease, disinfect once a day in multiple seasons, and disinfect once or twice a week in other periods. The scope of disinfection includes the door of the pig farm, the door of the pigsty, the pig's feet and so on. It is best to set up a disinfection pool at the door of the pigsty to facilitate disinfection.

Foot-and-mouth disease vaccination. The relevant departments should strengthen the publicity of pig foot-and-mouth disease vaccination and guide farmers to choose the correct vaccination.

Specifically, we should do a good job in the following four points:

First, for the epidemic area, self-made rehabilitation serum can be used to inoculate piglets to prevent piglets from dying from sudden acute myocarditis.

Second, for large-scale breeding plants, vaccination, disinfection, timely isolation of sick pigs and other measures should be taken, especially in the high incidence season. Once foot-and-mouth disease occurs, it is necessary to immediately isolate diseased pigs, cull seriously ill and highly contagious pigs, and inject rehabilitation serum.

Third, strictly follow the immunization procedure. According to the characteristics, pathology and symptoms of foot-and-mouth disease in pigs, a reasonable immune procedure was established and strictly carried out. Generally speaking, breeder sows should be immunized 2-3 times a year, and must be immunized once before mating; for parturient sows, they should be immunized twice during mating, and the interval between the two immunizations is about one month. For piglets, the first immunization should be carried out between 55 and 65 days after birth, and the second immunization should be carried out within 25-30 days.

Fourth, choose an efficient and correct vaccine. Synthetic peptide vaccine can be adopted, and astragalus polysaccharide should be supplemented when vaccinated, which can not only protect pigs, reduce adverse reactions, but also improve immune effect.

Purification of epidemic areas: if foot-and-mouth disease occurs, the entire epidemic area should be disinfected, blocked and reported in a comprehensive and timely manner, so as to minimize the loss of the epidemic.

One case of swine foot-and-mouth disease occurred in Yunnan and Guangxi respectively.

On June 10, a group of pigs transferred to Chongqing in Xinping Yi and Dai Autonomous County, Yuxi City, Yunnan Province, were found to have suspected symptoms of foot-and-mouth disease at the designated animal health supervision and checkpoint in Qijiang District of Chongqing. On June 10, Chongqing Animal Disease Prevention and Control Center diagnosed as suspected foot-and-mouth disease. On June 27, it was confirmed by the National foot-and-mouth Disease reference Laboratory that the epidemic was Type O foot-and-mouth disease.

On June 10, a batch of pigs transferred to Chongqing in Gangnan District, Guigang City, Guangxi, were found to have suspected symptoms of foot-and-mouth disease at the designated animal health supervision and checkpoint in Qijiang District, Chongqing. Two pigs were infected and one died. On June 10, Chongqing Animal Disease Prevention and Control Center diagnosed as suspected foot-and-mouth disease. On June 27, it was confirmed by the National foot-and-mouth Disease reference Laboratory that the epidemic was Type O foot-and-mouth disease.

After the outbreak of the epidemic, Chongqing has done a good job in dealing with the epidemic in accordance with the requirements of relevant plans and technical standards for prevention and control. 171 sick pigs and pigs in the same group have been culled and killed, and all the sick and killed pigs have been treated innocuously. Yunnan and Guangxi carried out comprehensive investigation and emergency monitoring around the transferred areas, and earnestly did a good job in livestock immunization and disinfection. At present, the epidemic has been effectively controlled.