Satisfy the needs of pigs for various nutrients, keep the pig house and sanitation, and properly match and modulate the feed. It is forbidden to feed moulds, degenerate feeds, and forage grasses, so that coarse materials can be finely fed, regularly quantified, and less frequently added. Feed conversions should be gradually carried out, and sufficient drinking water should be provided.
Self-cultivation and strengthening of quarantine. Self-cultivation is an important measure to prevent the spread of disease. The purchase of breeding pigs or pigs from other places or markets should be purchased from places where there is no infectious disease, and the purchased pigs must be quarantined by local veterinary departments and issued relevant quarantine certificates before being transported. Pigs that have just been purchased cannot be immediately polycultured with the original pigs in the pigsty. They must be isolated and observed for one month to confirm that they are free from disease before they can be reared in groups.
Do preventive medicine and deworming. In the prevention of drug use, it is first necessary to check the integrity of the bottle and lid of the vaccine. The injection site should be sterilized with 75% alcohol cotton balls. In addition, the diluted vaccine should be used within 4 hours. According to the prevalence of major parasitic diseases in the area, insecticide-repellent drugs are selected and the insects are periodically dewormed.
Do a good job in cleaning and disinfection. Elimination of pathogenic microorganisms in the external environment and cutting off the spread of infectious diseases. When disinfecting a pig house, the pig should be driven out first, and the feed, excrement in the feed tank, and the dirt on the walls and the top of the circle should be removed and then sterilized. Disinfectant can use 20% quicklime solution, 5%~20% bleach solution, 0.5% potassium permanganate solution.
Uv absorbers are the most widely used light stabilizers, which can be divided into salicylate, benzophenone, benzotriazole, substituted acrylonitrile and triazines according to their structure. The most widely used light stabilizers are benzophenone and benzotriazole in industry. Quench agent is mainly metal complex, such as divalent nickel complex, and often used with ultraviolet absorber, play a synergistic effect.
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