(1) The concentration of pathogenic microorganisms in the food and living environment of the Tramps is many times higher than that of ordinary people. However, it is rare that the vagabond is sick. (2) Rural children deal with dirt all day long and are dirty all day long. Even before meals, they do not wash their hands. Can you say that rural children do not have high resistance to the city? (3) When we talked about the environment of raising pigs in rural areas twenty years ago, there was no cement floor at that time. At that time, the pigs were all lying in the mud and lumps, and there was no pig manure and disinfection. There are few pigs at the time, not even sick... These pig friends raised their own opinions and the examples cited were not problematic, but they did not recognize the key to herd resistance. It is not appropriate to overthrow some of the modern pig raising techniques. The productivity of modern genotype sows has been significantly improved, such as the number of litters, lean meat, and growth rate, but it is subject to greater nutritional and physical pressure, resulting in sows’ resistance to the environment, nutrition, and management. Obviously reduced stress, physical fitness continues to weaken. At the same time, it is overloaded every day (fast growth, high birth rate per year, and high breast-feeding intensity), coupled with many factors such as high stocking density, poor environmental conditions (complex pathogens, air, temperature, humidity, etc.) . While homeless children and rural children have poor living conditions, they are free to live without overwork and cannot be compared with the pig population. Many pig farms proposed poor disinfection, and even counteracted, they did not consider whether the disinfecting work had achieved the taste, but there were many misunderstandings and loopholes in the disinfecting work, which led to incomplete disinfection, which in turn facilitated the spread of germs. First, do not clean or clean up before disinfection. Pig manure, feed residue, etc. are most likely to breed bacteria. If the floor, trough, wall, etc. inside and under the floor of the leaking seam are not thoroughly cleaned, spray disinfection will play a very limited role. Soaking is also difficult to soak. Second, the new breeder’s luggage and clothing. Many pig farms are sterilized with ultraviolet light at the door, which not only does not kill the bacteria inside the clothes, but also harms human skin. For these items, spraying and soaking cannot be performed. Therefore only fumigation can be solved, but disinfection should ensure sufficient time. Third, disinfect the bricks and walkways in the pool. Many pig farm gates and piggeries are equipped with bricks or sidewalks in the disinfecting tanks (troughs) at the entrance so that people's shoes can pass through the disinfecting tanks and disinfect the tanks into waste. Fourth, disinfection of large-volume items. The wood used in the incubator is bulky and difficult to soak in. If the disinfection is not complete, the impact on the next batch of pigs will be very large. Can be used to spray paint on the wood board, spraying paint after the board can prevent the penetration of pathogens, but also easy to clean and disinfect, and can be used many times. Fifth, with the pig disinfection. The disinfectant itself is a relatively irritant material. Disinfection with pigs can easily cause damage to the respiratory tract of the pig and accelerate the infection of pathogenic microorganisms. These are the common disinfection loops on pig farms. We hope that the majority of farmers can take warnings and see if there are loopholes in their own pig farms. The resistance of herds is not only related to pathogenic microorganisms in the external environment, but also closely related to pathogens and autoimmune diseases in the body. Therefore, the following measures should be taken to improve herd resistance. 1. Remove pathogens from the external environment Implement effective biological safety measures to strengthen the disinfection of the farm environment and prevent pathogens from entering the farm. In pig farms, piggery should be frequently cleaned and kept clean. Use 5% to 10% bleach solution or 2% to 3% caustic soda solution to spray 1 or several times. Spray and disinfect once every 15 days. Using the all-in, all-out feeding mode, a thorough cleaning and disinfection of the pig house can be carried out in the following manner: 1 Cleaning: Thoroughly clean the walls, floors, and equipment with a high-pressure nozzle; 2 Soaking: Spray the bar with 3% caustic soda and soak 1 hour; 3 flush: flush with a high-pressure jet; 4 fumigation: formaldehyde solution (formalin). Need 15~30mL formalin per cubic meter, fumigation 12 ~ 24h, kill bacteria and viruses. The doors and windows are closed when fumigated, and the air is changed after fumigation. Or use peracetic acid according to 1 ~ 3g/m3, diluted to 5% before use, heating fumigation sterilization 1 ~ 2 hours. 5 blank: Strictly empty for more than 7 days. 2. Remove pathogens from the environment More and more diseases that harm pigs, mycoplasma, pleuropneumonia, and Haemophilus disease. Especially in recent years, circovirus infection and blue-ear virus infection, which are popular in recent years, will reduce the immunity of the body and make it more susceptible to infection by various pathogens. It is possible to remove the pathogenic microorganisms in pigs through effective, long-lasting, non-immunosuppressive, antibacterial agents with a broad spectrum of antibacterial properties (such as fast-folding, anti-asthma, etc.). 3. Improve body resistance On the one hand, through careful management, comprehensive and balanced nutrition, to minimize stress; on the other hand through immune nutrition, improve the body's non-specific immunity. Differential Diagnosis of Respiratory and Reproductive Disorder Syndrome. Swine Respiratory and Reproductive Disorder Syndrome is free of anaemia and jaundice. Swine Respiratory and Reproductive Disorder Syndrome Breathing difficulty, necropsy has obvious lesions. Eperythrozoonosis in pigs is treated with tetracycline antibiotics. Prevention measures treatment. For pigs with triazosin 5 mg to 10 mg per kilogram of body weight, diluted with physiological saline into a 5% solution, intramuscular injection points, once a day, once every 3 days to 5 days. Long-acting oxytetracycline treatment, the dose of 10 mg to 20 mg / kg, oral, intramuscular or intravenous injection, chlortetracycline 15 mg / kg, for 7 days. Symptomatic treatment of piglet infections and chronic cases is necessary, and if iron supplements 200 mg of dextran is used. Dietary supplements of vitamins and ferrous sulfate are appropriate and some salt is added to drinking water. Promote the repair of body tissues, enhance the body's resistance and detoxification capabilities, and use antibiotics to prevent secondary infections. Serious remedy, strong heart, easily do not use antipyretics. prevention. Strengthening feeding and management, maintaining the hygiene of pig houses and feeding utensils, and reducing adverse stress are the key to preventing the occurrence of this disease. In summer and autumn, insecticides should be sprayed on a regular basis to prevent insects from biting pigs and cutting off the source of infection. When implementing feeding and management procedures such as injection prevention, tail-cracking, ear-seal, and castration, equipment should be replaced and strictly disinfected. Purchased pigs should undergo blood tests to prevent the introduction of infected or occult pigs. In the epidemic season of the disease, prophylactic drugs may be given, and oxytetracycline or chlortetracycline additives may be added to the feed, or 800 mg/ton or 90 mg/kg azagic acid or 45 mg/kg/Loxane arsenic added per kilogram of feed may be used continuously for 30 days. 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