Pig nameless hyperthermia syndrome, commonly known as "pigless high fever", is mainly caused by two or more kinds of swine fever, reproductive and respiratory syndrome, swine flu, pseudorabies, and porcine circovirus. Pigs are immunosuppressed and often mixed with a variety of bacteria, mycoplasma and toxoplasma, and the disease is more complicated.
First, the incidence
Sick pigs have unnamed high fever, anorexia, lethargy, vomiting, diarrhea, constipation, runny nose, cough, increased secretion of the corners of the eyes, abdominal breathing, and redness of the whole body. Death within 2 weeks, drug treatment is invalid.
Second, clinical diagnosis
The body temperature of sick pigs increased to 41-42 degrees, loss of appetite, lack of energy, initial constipation, and later diarrhea, bleeding in the back pores, blue-purple spots in the inner part of the femoral hair, and a few pigs in the middle and late stages. The ends of the extremities and the abdomen are reddish purple, walking is unstable, lying on the ground, some pigs are erected with both ears backward, and then there are neurological symptoms.
Third, the necropsy changes
The lungs are swollen and hardened. If the rubber is not contracted, the symptoms of interstitial pneumonia are obvious. The lungs are mottled to brown lesions like marble. Most mixed infections of pneumonia, suppurative lesions, and partial lung hemorrhage. Hemorrhagic pneumonia, the interstitial is significantly widened. Lymph node enlargement, especially in the inguinal and hilar lymph nodes. Some dead pigs have swollen liver and light color, and some livers are yellow earthy and crisp. Some pig kidneys, bladder, throat, heart coronal sulcus fat and endocardial membrane have bleeding points; some of the dead pigs have swollen kidneys, darker colors, brown or khaki, brittle texture, and congestion.
Fourth, treatment
The porcine leukocyte interferon (lyophilized type) was first used for the affected pigs, and the antibiotics such as amoxicillin and cephalosporin were supplemented once a day after the injection of the interferon in the sick pig, and the treatment was remarkable once a day.
Intravenous injection of interferon in the same group of untreated pigs is generally 1-2 times to control the infection of pigs. For suckling pigs and nursery pigs, use α-interferon 0.5ml + “Xinbital†(transfer factor) 3ml once a day for 2-3 times; reserve pigs and growing pigs with α-interferon 1ml + “Xinbisto†4ml, 1 per day Second, use 2-3 times; sow, fattening pig with alpha interferon 1.5ml + "Xinbituo" 6ml, once a day, once every 2-3 times.
In addition, the soil method of prevention and control can be used to grind 8 pieces of paracetamol tablets and mix them into 6 egg whites to feed the pigs. At the same time, use the disinfected scissors to cut the tip of the ear to release blood, and then supplemented with Chinese medicine mixture to improve the body's immunity.
V. Summary
In view of the complex etiology, sick pigs are generally more and more bad, prevention and treatment should be based on prevention, through strengthening feeding management, do a good job of heatstroke prevention, early prevention of health, strengthen disinfection, symptomatic treatment to reduce its morbidity and mortality.
Strengthen epidemic prevention and disinfection, formulate an immunization program that meets the characteristics of local diseases, and strictly implement immunization plan diseases according to immunization programs. Improve feeding management and prohibit people outside the farm from entering the farm, especially in the production area. Adhere to the principle of self-supporting and self-supporting, try to achieve all-in and all-out, and suspend the purchase of breeding pigs and piglets from outside during the high incidence of the disease.
To reduce the stocking density, the live pig should have a living space of 0.8 square meters or more, and the breeding house should preferably be 1.2 square meters per head. The number of pigs per column is preferably 10-12 heads, and the reasonable breeding density can be effectively controlled. Pigs have no name for high fever and respiratory diseases.
For pig farms that already have unnamed high fever, we should isolate and eliminate sick pigs, treat them with drugs, immunize pigs with emergency immunization, and improve feeding management. Through these comprehensive measures, we control pig farm diseases.
According to the characteristics of the disease, the corresponding emergency immunization, with special attention to the immune immunity of pseudorabies, blue ear disease and swine fever. Grasp the immunity of the sow and ensure the quality of the immunization. At the same time, note that injections of different vaccines must be separated by more than 5-7 days. Otherwise, not only will it not be immune, but also the immunity of the herd will be inhibited, leading to more serious diseases.
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