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[Disinfectant] Four disinfection methods and common disinfection mistakes in the prevention of African swine fever

[Disinfectant] Four disinfection methods and common disinfection mistakes in the prevention of African swine fever

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Common disinfection methods

1.Disinfect empty pig houses

Adopt eight step disinfection method, namely "one clear two wash three bubble four eliminate residue, five fog six white smoke eight empty shed"."Clean" means to remove equipment, move the waste discharge board, and thoroughly clean the dust and cobwebs on the roof and Windows."Second washing" means washing the floor, walls and equipment of the pig house;"Three bubbles" means to soak the floor with disinfectant and some removable equipment for at least 24 hours."Four disinfectant" refers to the disinfectant used to flush the surface of the ground and equipment with plenty of water;"Five fog" refers to the comprehensive atomization disinfection of the whole shed to make the disinfectant fully contact with the roof and air, etc.The term "six white" refers to the use of limestone to paint walls and floors where pigs have come into contact, killing bacteria, viruses and parasites;"Qi xun" means to close doors and Windows and use formaldehyde to kill pathogenic microorganisms after a certain period of time;The term "eight empty sheds" refers to empty sterile sheds for at least a week, reducing irritation to the pig population.

2. Disinfection of pig with pig

Low-irritant products should be selected, and the pig shed should be disinfected by means of atomization.Need to pay attention to: winter with pig disinfection should be as far as possible at noon when the temperature is high, to prevent pigs from catching cold cold.

3.Water disinfection

Water disinfection can kill the pathogens in the drinking water of pig houses,and have a significant prevention of infectious diseases and digestive tract diseases in pigs.As this kind of disinfectant will be mixed into water and directly drunk by the pigs,the selection of disinfectant should focus on the safely of the product,as well as whether the qppetite and drinking water of the pigs will be affected.

4. Environmental disinfection

Disinfect pig farm floor, gate, corridor and transport vehicle.In the process of use, many farmers will simultaneously use multiple disinfectants to achieve the purpose of broad-spectrum disinfection. However, such operation may lead to acid-base neutralization, which will weaken the disinfection effect. Therefore, it is necessary to fully understand the product characteristics before mixing, or to timely consult the manufacturer.

Common disinfection mistake area

Myth 1: the higher the concentration of disinfectant, the better the effect.
The concentration of disinfectant is determined according to its nature and the sterilizing object. Blindly increase, on the one hand will increase the cost of breeding; On the other hand, it will also increase the toxic and side effects of drug residues on livestock and poultry.

Myth 2: the higher the temperature, the better
General disinfectant is in disinfection the temperature of the environment is higher disinfection ability is stronger, so, most farms like to choose noon disinfection. However, some disinfectants are weakened in the case of high temperature. For example, dichlorohein in chloride preparations, and iodine in iodine preparations, etc., the effective ingredients will decompose under high temperature and the disinfection force will decline. Disinfection with such disinfectant should be carried out in the morning and evening.

Myth 3: the more disinfectant you mix, the better
Many farmers mix two or more disinfectants in water in order to achieve wide spectrum and thorough disinfection. However, if the effective components of disinfectant are not understood, acid and alkali will often be mixed. Neutralize the reaction, which reduces the effect. In addition, in a short period of time after the use of acid and alkali two disinfectant, will also affect the effectiveness of disinfection.

Mistake 4: emphasize disinfection system, disrespect disinfection procedure, ignore disinfection result
Poultry farm thinks the environment inside and outside the enclosure to be disinfected regularly according to disinfection system can be all right, actually otherwise. Most farmers often do not follow procedures, sequence disinfection, or disinfection is not complete, can not cover all, can not achieve effective disinfection.

Myth 5: use disinfectant alternately to avoid developing resistance
Disinfectants act differently than antibiotics:
- REDOX reaction, such as superoxide, chlorine, bromine, iodine
- change, osmotic pressure, such as acid, alkali, phenol, alcohol
- change structure, such as quaternary ammonium salt, aldehyde
If replacement is considered, the following situations need to be considered:
- at low temperature, as far as possible do not use the REDOX disinfectant
- in acid or alkaline conditions, do not use the opposite nature of disinfectant
- in soap material, do not use the quaternary ammonium salt
- organisms: oxidation type bactericide
- , hard water, quaternary ammonium salt, benzene, phenol coal
- corrosion,
Aldehyde disinfectants such as glutaraldehyde are not affected by the above factors.

How to select an aldehyde disinfectant

Glutaraldehyde is used to replace formaldehyde in a wider field

Glutaraldehyde has been honored as the third milestone in the development of chemical disinfectants after the disinfection of formaldehyde and ethylene oxide.International food safety and public health organizations recognized as it is a common single component the strongest type of disinfectant in disinfection ability, can make the pathogen of protein crosslinking coagulation and death, its effect is 10 times stronger formaldehyde, formaldehyde not only has strong penetrability, the advantages of fast poison fungicidal, without excitant, corrosion, toxicity and carcinogenicity of formaldehyde.GLUTEXTM disinfectant, as the formulation of GLUTEXTM, has better disinfection effect on site than formaldehyde, including fumigation disinfection and spraying disinfection.

Pure glutaraldehyde was first put into commercial production in 1951. It is a multifunctional antimicrobial agent with a wide range of applications, including high level disinfection of medical equipment used in the health care industry, microbial control in industrial facilities such as oil fields and cooling towers, and disinfection of livestock and poultry farms.It has a wide range of utility, is free from formaldehyde and is prone to biodegradation. It is also a non-carcinogenic, non-permanent and non-biological substance.

Currently, only two enterprises in the market have the necessary technology and capacity, and can put pure glutaraldehyde into commercial production at a competitive price. Dow is one of them and has a market share of 70%.

Selection of glutaraldehyde products

Formaldehyde free: due to the production cost, the commercially sold glutaraldehyde products usually contain formaldehyde, while the existing national standard detection method cannot distinguish the presence of formaldehyde.

Product color: due to its chemical properties, glutaraldehyde is prone to self-polymerization, turning brown in color and losing its disinfection effect.

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