Pigs eat normally but have a fever.

There are many factors that cause pig high fever, and because the diseases that cause pig high fever have their own characteristics, the actual incidence of each farmer is different, and it is not clear in one or two sentences. From the clinical symptoms, 80% of the cases are mainly fever. Diagnosis can only be made through thorough diagnosis. At present, there are basically the following diseases. The clinical symptoms, pathological changes and preventive methods of various diseases are introduced as follows for reference. First, the body temperature of classical swine fever has risen to 40-42℃ for a long time. Loss of appetite or stop eating, mental depression, easy to sleep, fear of cold, crowded in piles or drilling grass nests. Standing and walking, hunchback, limb weakness, slow movement, unstable swing, conjunctival redness, purulent discharge, constipation first, then diarrhea. There are indelible purple bleeding spots at the root of the ear, abdomen and inside of limbs. Lesions: lymphadenopathy, peripheral bleeding, red and white mixed marble. The color of the kidney becomes pale, and there is a bleeding point the size of a needle tip on the surface. Spleen enlargement, hemorrhage, and hemorrhagic infarction protrude from the surface edge. There is a button ulcer in the mucosa of ileocecum in chronic cases. Prevention and treatment: there is no specific drug treatment for this disease, which mainly depends on prevention. 1, strengthen feeding management at ordinary times, and do a good job in environmental sanitation and disinfection. 2. Vaccinate regularly. In order to eliminate the interference of maternal antibodies (including other acquired antibodies), the inoculation dose can be increased (2-4 doses per head). 3. When classical swine fever occurs, apply high-dose classical swine fever vaccine 10- 15 doses/head for emergency vaccination in epidemic areas or threatened areas. Increasing vaccination dose is the best way to eliminate maternal antibodies, and it is also an effective measure to prevent atypical swine fever. 4. When swine fever occurs in pigs, the sick pigs should be isolated quickly, disinfected with pigs, treated symptomatically at the same time, injected with high immune serum urgently, and antibiotics and sulfonamides should be used to prevent secondary infection. 2. Swine flu pigs' body temperature rises to 40-465438 0.5℃, sometimes reaching 42℃, with loss of appetite or abandonment, depression, muscle and joint pain, frequent lying on the ground, shortness of breath, paroxysmal spasmodic cough, dry and hard feces, and mucus secretion in eyes and nose. Lesions: mainly concentrated in respiratory organs. The mucosa of nose, throat, trachea and bronchus is congested, and there is a lot of foamy mucus on the surface, sometimes mixed with blood. Lung lesions were purplish red, like fresh beef. Prevention and treatment: There is no specific medicine for the treatment of this disease. 1, antipyretic and analgesic for fever, intramuscular injection of 30% analgin 3-5 ml, or good treatment. 2, control secondary infection, the application of antibiotics or sulfonamides, can prevent secondary infection. 3. Take Chinese medicine orally. Prescription: Flos Lonicerae, Fructus Forsythiae, Scutellariae Radix, Radix Bupleuri, Fructus Arctii, Pericarpium Citri Tangerinae, Radix Glycyrrhizae10-15g, decocted in water. After using the above method for 3 days, pigs can recover. Third, the pig's lung disease temperature rose to 4 1-42℃, stopped eating, the mucosa turned blue, the throat was red and swollen, and the mouth was panting, showing a dog sitting posture. Cough, difficulty breathing. The skin has erythema and red spots. The nose is purulent. Lesions: The main disease is fused bronchopneumonia, with "fleshy" or "shrimp-like" consolidation of apical lobe, cardiac lobe, middle lobe and diaphragm lobe. Prevention and control: 1, strengthen feeding management and improve the resistance of pigs. Vaccinate regularly. 2, treatment, with kanamycin sulfate, according to 50000 units per kilogram of body weight intramuscular injection. Fourth, swine streptococcosis suckling pigs are the most serious, mostly septic. The pig's body temperature rose to 4 1-43℃, conjunctival flushing, tears, cough, dyspnea and purple spots on the body surface. Sick pigs with arthritis have dyskinesia, stiff hindquarters, swollen joints, pain and limping. The lymph nodes of pigs with suppurative lymphadenitis are swollen in forehead, neck and chest. Pathological changes: septicemia, the sick pig showed symptoms of congestion, bleeding and suppuration in all organs of the whole body. Meningeal congestion, hemorrhage, vascular protrusion, purulent lesions. Prevention and control: keep the pigsty clean and dry, and disinfect it regularly. Penicillin is the best treatment for this disease, with 50,000-80,000 units per kilogram, twice a day for 3 days. 5. Symptoms of toxoplasmosis in pigs: Similar to swine fever and influenza, the body temperature rises to 40-42℃, and the sick pigs are depressed, their appetite is reduced and their appetite is seriously wasted. There are ecchymosis on the head, ears and lower limbs, weakness in the hind limbs, walking trembling, lying down, difficulty breathing and coughing. In severe cases, it is a dog sitting position. Foaming at the mouth, pregnant sows can abort. Pathological changes: the liver is slightly enlarged with necrotic spots and bleeding spots, a small amount of hemorrhage in renal cortex and a small amount of bleeding spots in bladder. Lymphatic follicles in ileocecum are swollen. Pulmonary edema, swollen lymph nodes, and yellow effusion in the chest and abdomen. Prevention and treatment: For sick pigs with severe symptoms, sulfadiazine (0.07 g/kg body weight), sulfadiazine (0.07 g/kg body weight) and 100-500 ml glucose (10%) can be mixed and injected intravenously. The disease can be cured for the first time, usually 2-3 times. Pigs with mild symptoms can be cured in 3-5 days by intramuscular injection of sulfanilamide -6- methoxypyrimidine, 0.07 g per kilogram of body weight, twice a day, 1 time. Six, infectious pleuropneumonia pigs' body temperature rises above 42℃, and it is difficult to breathe. They sit and lie down in dog style, abdominal breathing, coughing, red foam with colored blood flowing from their mouths and noses, and cyanosis in their abdomen and ear tips. Pathological changes: white cellulose attached to the pleural surface of sick pigs, pleural effusion, pulmonary congestion and bleeding. Prevention and treatment: 30% F injection has excellent effect.