Prevention and control of porcine erysipelas

Porcine erysipelas is an acute febrile infectious disease caused by erysipelas (erysipelas suis). The main features are high fever, acute septicemia, skin rash (subacute), chronic verrucous endocarditis and skin necrosis and multiple non-suppurative arthritis (chronic). At present, intensive pig farms are relatively rare, but they are still not completely controlled, showing a worldwide distribution. Let's take a look at the prevention and treatment of porcine erysipelas.

Symptoms of porcine erysipelas

1. Acute type: acute porcine erysipelas, also known as septic swine erysipelas, is characterized by sudden outbreaks, acute processes and high mortality. One or more pigs in the herd died of disease, and the others died one after another. The body temperature of diseased pigs rose sharply to 42-43.9 degrees, showing shivering, some screaming, lying down, stiff gait during driving, some trudging, and a few sick pigs vomiting. Erythema appeared on the skin of some diseased pigs before death. The red color disappeared during finger pressing and recovered when pressing stopped.

2. Subacute type: subacute porcine erysipelas is also called rash type, which is characterized by a rash on the surface of the skin, commonly known as "fire imprint". The initial manifestations of the disease are fever, body temperature rising to 40,41.9 degrees, loss of appetite, thirst, constipation, conjunctivitis, and some paralysis and vomiting. 1-2 days after the onset of the disease, a rhombic or round or irregular rash mass appeared on the skin. The boundary between the rash mass and healthy skin was very clear. The color of the rash mass changed from light red to red, then to dark red, and finally to purple.

3. Chronic type: the main symptom of chronic type is limb arthritis or endocarditis, and there are also cases of both. This type is mostly transformed from acute or subacute.

Porcine erysipelas treatment

1. Injection therapy: penicillin and streptomycin 300000 units, plus compound aminopyrine 10ml / 20ml, mixed intramuscular injection, 2 piglets and 4 big pigs, twice a day.

2. Drip therapy: 500 ml drip with 10% glucose.

3. Soap bath therapy: apply soap on the rash block and scrub it with a brush twice a day.

4. Traditional Chinese medicine therapy: rhubarb, gypsum, Radix scrophulariae, Anemarrhena anemarrhena, Forsythia suspensa, Dilong 5 each, licorice 3, add water decoction, take 2 doses in a row.

5. Acupuncture: acupuncture also has a good therapeutic effect in mountain root, blood imprint, inferior ear, tail tip, Bainai and so on.

Prevention of porcine erysipelas

1. Strengthen management: strengthen the feeding and management of pigs, do a good job in epidemic prevention and hygiene, improve the natural resistance of pigs, pay attention to killing or dispelling mosquitoes, flies, rats and rats, and often keep pig pens, sports grounds and management equipment clean. Disinfect with disinfectant regularly.

2. Strengthen quarantine: strengthen traffic quarantine, slaughtering and quarantine and inspection of farmers' markets. if sick pigs or infected products are found, they should be isolated and disinfected immediately, and the products should be treated to stop the spread of pathogens.

3. Preventive injection: injecting porcine erysipelas vaccine according to the immune procedure is an important preventive measure.

① generally speaking, piglets must be given the first prophylactic injection at the age of 1-2 months, and then injected again after 3 months of age.

② breeder pigs should be vaccinated every 6 months, but sows within two weeks after breeding, sows at the end of pregnancy and lactating sows will not be injected temporarily.

③ porcine erysipelas vaccine is a live bacterial preparation, so antibiotics should be avoided in feed or injected directly into pigs 3 days before and 7 days after inoculation.