First, daily disinfection
1. At least 15 cm depth of foot-disinfection tank, built-in 2% to 3% caustic soda water, disinfectant depth greater than 3 cm. The liquid should be changed every 3 to 4 days. When changing the liquid, the tank must be washed first and then the disinfectant must be replaced. When the rain or hot weather is appropriate, the concentration may be increased or the liquid may be changed one day earlier. Enter the pig farm pedal disinfectant for at least 15 seconds.
2. Vehicle inlet disinfection tank length is at least 1.5 times the circumference of the tire, the pool width is the same as the entrance to the farm, and the height of the liquid in the tank is not less than 15 cm. At the same time, configure low-pressure sterilizers to disinfect incoming vehicles.
3. Before entering the production area, workers must be sterilized in the disinfection room for 5 minutes using a UV lamp and replace the work clothes and hats. Conditional farms can shower, change clothes and enter the production area. Visitors from outside China must also follow this procedure and determine the visiting route in advance. During the visit, they must not change the route at will.
4. To enter all items in the field area, according to the characteristics of the items, choose to use the disinfection form for disinfection. Such as ultraviolet light irradiation for 30 to 60 minutes, disinfection liquid spray, soaking and so on.
5. Pig house disinfection. When the fence is empty, the pig house is cleaned and then disinfected with 2% to 3% caustic soda for more than 2 hours. First brush with a harder texture and then rinse with clean water. After a few days of drying, the doors and windows of pig houses were closed and fumigated with solid formaldehyde or peracetic acid for 12 hours. It is best to disinfect again with 1:300 germ poison or 1:800 quick clean spray. When the pig is in the circle, after cleaning, use 0.1% peracetic acid, 0.5% strong disinfectant solution, 0.015% poisonous solution spray, or use 1:1200 to disinfect the Weiquan solution for pigs, floors, walls, doors, and pigs. Table spray, usually with 300-500 ml disinfectant per square meter, 1 or 2 times a week. For the delivery room, first wash the ground and facilities with water, dry and use speed kill 5 or formalin fumigation for 2 hours, and then disinfect with 1:300 bacteria or 1:1200 disinfection solution, with clean water Go to the residue and finally scrub the floor and walls with 10% lime water. Disinfection of the sow body surface can be sterilized with 1:500 potent iodine or 1:1500 extinction. Before entering the delivery room, the pigs should be thoroughly cleaned and then disinfected with 1:500 bacteria. The lower abdomen, perineum, and breast can be wiped with 0.1% potassium permanganate solution.
Second, emergency disinfection when the disease occurs
1. After the pig house is lapped, it is first fully sterilized with 3% caustic soda, dried, and then disinfected with sodium hypochlorite 100 times. Note that the ground, ceiling, column beam, wall and window, and channel must be disinfected. The equipment, clothing, and waste can be burned as much as possible, or they can be soaked in 3% caustic soda for 24 hours and discarded. For equipment that can still be used, it can be sterilized by damp heat (boiled or autoclaved) or immersed in 1:200 sodium hypochlorite or 0.5% to 1% caustic soda for at least 12 hours.
2. After the batches of pigs in the sports field and grazing farm are out of the circle, 1 kg/m2 of lime is sprinkled on the ground. After 1 week, wash and clean the lime, and enter the pigs after the epidemic is stable.
3. Compost urine tract, urine pool can be sprinkled lime or 2% to 3% caustic soda water. Faeces can be sterilized by the fermentation tank method or pile-up method, or sprayed with 5% ammonia water; the sewage can be disinfected with bleach powder containing 25% of available chlorine.
4. Dead pigs are best burned or buried. When deep-buried, the depth of the pit is more than 1 meter. The body is first immersed in disinfectant (such as 3% caustic soda water). When burial, lime is thickly sprinkled. The body-worn equipment is best burned. If it is to be used, it can be soaked with sodium hypochlorite 200 times for at least 12 hours. The corpses were sprayed with 0.5% to 1% caustic soda water spray.
Third, regulate the selection and use of drugs
There are many kinds of disinfection drugs, including chlorine preparations, iodine preparations, peroxides, aldehydes, quaternary ammonium salts, phenols, and strong bases. When choosing disinfectant drugs, one must consider the type, epidemic situation, disinfection object, disinfection equipment, and pig farm conditions of the farm, and select two or more disinfectant drugs that are suitable for their actual conditions; Considering the prevalence of swine herd diseases and the possible development trend of the epidemic in this area, select and use 2 or more disinfectant drugs of different nature. Third, monitor the disinfection effect of disinfecting drugs on a regular basis and select according to the actual disinfection effect. Ideal disinfectant.
1. When using disinfectant drugs, it is necessary to choose drugs that are effective, have a wide range of effects, are effective and long-lasting, and are not easily affected by organic substances and salts. Especially during the epidemic, more careful selection and use of disinfectants should be made, especially for viral infectious diseases, and products that are identified and recommended by authoritative departments must be selected.
2. Before use, the characteristics of the disinfectant should be fully understood, and the disinfection plan should be set in advance. In combination with the season and weather, the applicable objects and occasions should be fully considered.
3. Practice has proved that for every 10°C increase in disinfectant temperature, the disinfection effect can be increased by 2 to 3 times. However, the disinfecting power of iodine, sodium hypochlorite, etc. is the highest around 20°C, and the active ingredient will be lost if it is exceeded.
4. Do not mix different disinfectants. Mixed use will only reduce the disinfection effect. If several kinds are needed, use it for several days and then use another disinfectant.
5. Disinfection is not a panacea. Complete prevention measures must be combined with hygiene management, immunization and drug control to control the occurrence of the disease.
Fourth, daily management
1. Set a reasonable distribution of UV lamps at the entrance of the site area and the entrance of the production area. It is best to keep the lights on for 24 hours. The UV lamp should be replaced every 45 days. As the UV lamp is harmful to the human body, the conditional pig farm can use an ozone generator or a disinfection fan.
2. During the key epidemic prevention period, the number of disinfections and the amount of liquid used during the disinfection of pigs may be appropriately increased. When the mortality of pigs increases or the density of the population increases, it is necessary to appropriately increase the dosage of the liquid and the concentration of the liquid when the pigs are disinfected.
3. For those gestation houses and breeding houses that cannot be left empty, the environmental sanitation of the whole house should be thoroughly cleaned at least once every six months, including roof dust, cobwebs, doors and windows, and other places that are not easily cleaned.
4. When an empty dosing system is installed in the empty room, the system must be cleaned and disinfected on a regular basis. Due to the different conditions in different pig farms and the different types of pathogens, they should not follow or imitate randomly when formulating disinfection plans and implementing disinfection measures. Only the actual situation of the pig farms can be truly grasped, and targeted disinfection practices are the most important. ideal.
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