What is the cause of pig's cold and fever?
Swine cold is a systemic disease, mainly due to the sudden drop of temperature or too wet and cold, or bacterial and viral infection, which leads to inflammation of upper respiratory mucosa. For example, if the temperature changes suddenly and sharply, it is stimulated by cold current and humidity, or the temperature is hot and cold, it is easy to catch a cold. Non-standard feeding management, poor thermal insulation performance of piggery, lack of regular sterilization and poor sanitary conditions all affect the health of pigs, leading to decreased immunity and illness. After long-distance transportation and frequent inversion, the immunity of pigs is often reduced due to fatigue, which leads to the obvious weakening of the ability to resist virus invasion, and then diseases occur.
Epidemiological characteristics of swine cold and fever
The occurrence of the disease has obvious seasonality, and it is often easy to occur in spring and winter when the temperature changes suddenly, especially in rainy and humid seasons. This disease can occur in pigs of any breed, sex and age. The disease is usually endemic or widespread. Moreover, it spreads quickly, and it can cause the whole group to get sick in 2-3 days. The disease is mainly transmitted through the respiratory tract in the form of droplets. The incubation period of the disease is short, ranging from several hours to several days, with an average of about 4 days. If pigs do not improve their feeding management and take effective treatment measures during the onset period, they will often suffer from classical swine fever, Haemophilus suis and pleuropneumonia, which will increase the difficulty of treatment and lead to death to a great extent.
Clinical symptoms of cold and fever in pigs
Before onset: 65438+ 0-2 days at the beginning of onset. Sick pigs are mainly characterized by low mood, loss of appetite or complete abandonment, fear of cold, often lying on the ground, conjunctiva flushing, dry nasal endoscope at rest, watery nose, but wet around nasal endoscope during exercise, increased urine volume, clear urine color, some accompanied by cough, shortness of breath, cold ears and a slight increase in body temperature.
Mid-onset: 3 ~ 4 days after onset. Because effective treatment was not taken or the treatment opportunity was missed in the early stage of the disease, the condition was not relieved, but worse. Sick pigs are characterized by loss of appetite, lying on the ground, uneven skin temperature, reduced chills, relatively dry nose, a small amount of viscous nasal fluid flowing out of the nose, reduced urination, red urine and granular dry feces. When touching the ear, I found that the temperature is different, the bowel sounds are weakened or irregular, and the body temperature is obviously increased, which can exceed 40℃, and the high fever does not retreat.
Late onset: that is, more than 4 days after the onset, due to factors such as not taking effective treatment before, the sick pigs in the later stage showed listlessness and a desire to eat, but they often stopped after eating a few bites, and the chills disappeared. They liked to drink dirty water and sewage and asked them to answer, and their tails naturally shook. The nose mirror is dry at rest, and the periphery of the nose mirror is wet during exercise, but there is no snot. The body temperature of some sick pigs has dropped slightly, and some pigs still have high fever. Decreased urination, red urine, a small amount of dry feces, granular, dark color, mixed with mucus or blood.
Symptoms and treatment of pig cold and pig wind-heat cold
Cold is one of the common and frequently-occurring diseases in pigs. According to its inducement, it can be divided into wind-cold cold and wind-heat cold. Pig cold is exogenous cold, that is, catching cold. Symptoms are chills at the tip of the ear, pallor of conjunctiva and oral mucosa, hypothermia, stuffy nose, clear nose and loose stools. Drugs that warm the stomach and dispel the cold must be used. Such as ginger 5 ~10ml, add10 ~15ml bitter tincture, and add a proper amount of warm water once. Or mash one end of garlic, and add 25 grams (25 ml) of white wine and appropriate amount of warm water. The feeling of wind-cold mostly occurs in winter and spring, and it is not good to abuse antipyretics.
Swine wind-heat cold is exogenous wind-heat, that is, the symptoms caused by fever are fever at the tip of the ear, jealousy, thirst, dry nose mirror and dry stool. Use antipyretic, sedative, cardiotonic, diuretic, stomachic, antidiarrheal, anti-inflammatory and other drugs for symptomatic treatment. As long as both treatment and management are taken into account, the disease is not difficult to cure.
How is the pig cold and fever treated?
To prevent swine flu and swine flu, we should pay attention to climate change and prevent pigs from catching cold. Pigs suffering from influenza should be isolated and treated in time, pens, feeding utensils and drinking utensils should be disinfected with 2% caustic soda solution, and scraps and water should be buried deeply or treated harmlessly. 0.05% moroxydine hydrochloride (Virin) was mixed into pig feed and fed for 65438 0 weeks. You can also give pigs 250g mung bean, 0/00 g Bupleurum/KLOC and 0/0 kg Bupleurum/KLOC decoction, which has a good preventive effect. Sick pigs with influenza and cold should be treated with drugs to prevent secondary infection. You can choose 15% moroxydine hydrochloride injection and antibiotic injections such as cephalosporins or quinolones, and inject them twice a day for 2 days. You can also use 30% Anemone injection, intramuscular injection at a dose of 30 mg per kilogram of pig body weight, twice a day for 2 consecutive days. If the whole pig is infected, take 25g of Schizonepeta, Flos Lonicerae, Folium Isatidis, Radix Bupleuri, Radix Puerariae, Scutellariae Radix, Caulis Akebiae, Radix Isatidis, Glycyrrhrizae Radix and Zingiberis Rhizoma (about 50kg per pig), dry, pulverize and mix with feed. General 1 dose will be cured, and if necessary, take 1 dose the next day.
Treatment scheme of pig cold and fever
If the pig's body temperature is too high to continue, dexamethasone sodium phosphate 5 ~ 12 mg or compound aminopyrine 5 ~ 10 ml can be injected intramuscularly. Recommended formula of traditional Chinese medicine: Flos Lonicerae, Fructus Forsythiae, Radix Astragali, Radix Bupleuri, Fructus Arctii, Pericarpium Citri Tangerinae and Radix Glycyrrhizae are decocted in water 1 0 ~16g, once a day for 3 days, or 6g of Radix Bupleuri, 8g of Radix Saposhnikoviae18g, pericarpium Citri Tangerinae and mint/kloc.