There are many types of disinfectants used in pig farms, but for diseased pig farms, different pathogens should choose their corresponding disinfectants to have good results.
1. High-efficiency intervention farm animal care disinfectant is effective against viruses, bacteria, spores, fungi, etc., such as glutaraldehyde, sodium hydroxide, peracetic acid, etc., but they have large side effects and are not suitable for some disinfection;
2. Medium-effect disinfectant spray is effective for all bacteria, but not for spores, such as ethanol, iodine preparations, etc.;
3. Low-efficiency disinfectants are bacteriostatic agents, and are also ineffective against spores, fungi, and hydrophilic viruses (non-enveloped viruses), such as quaternary ammonium salts.
At present, multiple infections or secondary infections of pathogenic microorganisms in large-scale pig farms are very common, including mixed infection of viruses, mixed infections of bacteria, mixed infections of viruses and bacteria, and secondary infections in the presence of some primary infections.
According to the investigation, the large-scale pig farms exist porcine reproductive and respiratory syndrome virus, porcine circovirus type 2, foot-and-mouth disease virus, swine fever virus, pseudorabies virus, mycoplasma pneumoniae, streptococcus suis, actinobacillus pleuropneumoniae, Pasteurella, perytozoon, escherichia coli and other pathogenic microorganisms threat.
When choosing a disinfectant, it is necessary to exchange different types of swine poultry disinfectant powder according to the object of disinfection, the purpose, and the type of disease. For example, some viruses (no cytoplasmic virus in the structure) are not sensitive to common disinfectants, especially circoviruses, and general disinfectants do not work on them, and high-efficiency disinfectants should be selected.
Disinfectants that are highly irritating and corrosive to pigs should not be used, such as sodium hydroxide, to avoid harm to the skin of humans and animals; medium-effect disinfectants can be selected for disinfection of the injection site.
Due to the differences in biological characteristics such as the morphological structure and metabolic mode of pathogenic microorganisms themselves, their responses to disinfection performance are also different. For example, G+ bacteria are more sensitive to swine barn disinfectant than G- bacteria, because the cell wall of G- bacteria is formed by a rich lipid envelope, which has the effect of preventing the entry of disinfectants.
Therefore, it is necessary to choose a disinfectant with a stronger effect on G-bacteria. For bacteria with spores (such as Bacillus anthracis), because the spores have thick spore walls and multi-layer spore membranes, the structure is solid, and the disinfectants are not easy to penetrate. Generally, we should also selecte high-efficiency disinfectants.
When choosing swine disinfectants, it is better to choose them based on the sensitivity of the pathogen to a specific disinfectant.