First, drug selection should be on the road In the selection of chemical disinfectants should consider: a strong disinfectant on the pathogen, little toxicity to humans, livestock, does not damage the object being disinfected, soluble in water, more stable in the environment, cheap and easily accessible and easy to use drugs. Common disinfection drugs: (a) Alkaline disinfectants. Such as fire alkali, lime and ash. Fire alkali can not be used to disinfect pigs, 3% to 5% of the solution for more than 30 minutes to kill all kinds of pathogens. 10% to 20% of the lime water can be applied to the disinfection of the bed surface, fences, walls, killing bacteria, viruses, but not effective for buds. (b) Double quaternary ammonium salt disinfectants. Such as double quaternary ammonium salt, double quaternary ammonium salt complex iodine. These drugs are safe, colorless, odorless, non-toxic, and have a wide range of applications. They have powerful killing effects on various pathogens. (c) Aldehyde disinfectants. Such as formaldehyde solution (formalin). Used only for sterilisation (without animals in the house). Usage: Put in the middle of the house, according to every cubic meter of space with 30 ml of formaldehyde, 15 grams of potassium permanganate, add the same amount of water, closed fumigation for 2 to 4 hours, open the window for ventilation after use. (d) Oxidants. Such as peracetic acid. It can be used to sterilize pig-carrying tools, pigs, etc., and is formulated as a 0.2% to 0.4% aqueous solution spray. (e) Halogen disinfectants. Such as bleach, iodophor, 100 poison and so on. Second, program design should be strict (a) Environmental purification and disinfection. Including vehicle disinfection (using 3% to 5% of lesu or 0.3% to 0.5% of peracetic acid solution), road disinfection (usually cleaned and disinfected once per month with alkali solution), site disinfection (timely Elimination of pig manure, weeds, etc. Wherever piled up, disinfect with 0.5% peracetic acid solution). (b) Disinfection of staff. Staff is the main vehicle for bringing pathogens into the area. A disinfection tank shall be set up at the door of the farm and at the entrance of each piggery. The pool shall contain 3% to 5% of Suer's liquid or 10% to 20% of the bleach solution for the staff to lame. Or allow them to wash their feet and replace their protective clothing before entering the production area. (c) Disinfection of pig houses. Including cleaning, flushing, to be dried and sprayed with 0.5% peroxy acetic acid solution, and then fumigation or flame or fire alkali disinfectant. (d) disinfection with pigs. Can choose to use peracetic acid, sodium hypochlorite, kill poison and so on, generally once a week disinfection. (five) drinking water disinfection. Use bleach powder to sterilize every kilogram of drinking water with 3 to 5 mg or 0.025% of 100% poisonous solution, once a week. (f) Treatment of dead pigs and feces. Pigs dying from infectious diseases should be buried far away from the pig farm or burned. Pigs dying from non-communicable diseases should be treated with high temperature. Pig manure should be accumulated in fermentation or into septic tanks. Third, improve the effect is fundamental (1) Select the disinfection method according to the disinfection object and use it reasonably. (b) Determine the focus of disinfection according to the type of disease. If it is transmitted through the digestive tract, it should be well sanitation and strengthen the disinfection of feed, drinking water, and utensils; the airborne and pig body surface disinfection should focus on respiratory diseases. (c) master the number of disinfection according to epidemic situation. Disinfection must be carried out regularly and regularly, with the promotion of pig disinfection. (D) master the temperature and humidity. Generally, the disinfection effect is better when the temperature is relatively high. Therefore, the disinfection is better every day at 9:30 to 11:30 and 3:30 to 5:00 in the afternoon. When the humidity is 60% to 70%, the disinfection effect is better. When the temperature is 10°C to 30°C, the effect can be obtained within 30 minutes. (e) control the pH of the environment. The normal growth and reproduction of microorganisms have a pH range of 6-8. When the pH value is greater than 7, the negative charge of the bacteria increases, which is favorable for the alkali and the like to kill the bacteria. (six) to master the concentration of disinfectants. For example, when the alcohol concentration is 70%, the disinfection effect is best instead of pure alcohol (98.50%) or 65% dilution. (7) Different disinfecting drugs cannot be mixed.
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