Infectious diseases are the enemy of the swine industry. The epidemic has severely restricted the development of the pig industry. Common infectious diseases that cause serious damage to the swine industry are swine fever, swine lung disease, swine erysipelas, swine typhoid fever, piglet dysentery and swine streptococcosis. Doing a good job of comprehensive prevention is the key to safeguarding pig production.
I. Epidemic features and clinical features
Swine fever: An infectious disease caused by swine fever virus. It is mainly transmitted through the digestive tract. It can also be infected through the respiratory tract, conjunctiva and damaged skin. Pigs of different ages can infect, can occur throughout the year, and are often explosive. It is characterized by acute febrile lethal sepsis. Changes in fibrinous necrotic enteritis and pneumonia can also be seen when the disease course is slightly longer.
Pneumoconiosis: The pathogen is Pasteurella multocida, the main respiratory tract infection, often with other diseases, pig infections, pigs, infections, mostly in spring, summer and autumn, usually Sporadic epidemics are acute infectious diseases characterized by sepsis, pharyngitis, and fibrinous pleuropneumonia.
Swine erysipelas: The pathogen is erysipelas bronchitis. The pathogens are more likely to infect through the digestive tract and can also be infected by skin wounds. The incidence of pigs aged 4 to 9 months is more frequent and occurs mostly in the summer and autumn. Its clinical features: acute type of symptoms of sepsis, subacute type of purple rash on the skin, chronic type of endocarditis and arthritis.
Paratyphoid pigs: Infectious diseases caused by cholera choleraesuis, occur mostly in piglets aged 2 to 4 months. The disease does not occur seasonally. However, it is more frequent in the rainy and wet seasons and often presents as an epidemic. It is characterized by the appearance of enteritis and persistent chancre.
Piglet dysentery: pathogens are pathogenic E. coli, mainly through the digestive tract infection, the incidence of suckling piglets within 20 days of age is more likely to occur throughout the year, especially in the climate change when the incidence is high. The piglets showed different symptoms such as jaundice, white diarrhea and edema.
Streptococcus suis disease: The pathogen is Streptococcus, the main route of infection is respiratory tract or wound infection, and the incidence of pigs and piglets on the shelf is more, and it is distributed or endemic. When it is popular, it is usually ferocious and spreads quickly. Common local lymph node abscesses are characterized by hemorrhagic septicaemia associated with meningitis.
Second, comprehensive preventive measures
1. Strengthen feeding and management, do a good job in environmental sanitation, keep the house clean and dry, and improve the body's own resistance.
2. Regularly do a good job in disinfection. Disinfect every two months.
3. Scale farmers are forbidden to enter non-breeding areas.
4. Do a good job of self-defense blockade during the epidemic and conduct captive breeding.
5. Do a good job of vaccination immunity. All of the above mentioned diseases have vaccines that can be prevented. Vaccination is applied to healthy pigs, and antibiotics are banned before and within one week after vaccination.
6. Do a good job of monitoring the epidemic. The epidemic was immediately isolated and reported to the local livestock department in order to be properly handled.
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