The disinfection and deterrence of the high temperature season in midsummer is an important preventive measure to kill pathogenic microorganisms and prevent the invasion and epidemic of animal epidemics. It is an important part that can not be ignored in current pig production. The high temperature and high humidity season in midsummer is a season in which infectious pig diseases occur frequently. In order to prevent the occurrence of infectious diseases, it is necessary to carry out large-scale disinfection and disinfection (prophylactic disinfection). When infectious diseases or suspected infectious diseases have occurred on the farm, the pathogens discharged from the affected pigs should be eliminated, and the contaminated pig houses, utensils, and other objects should be sterilized and sterilized at any time. When all sick pigs have recovered or died, they should perform a thorough and thorough sterilization (ie, terminal disinfection) on the utensils, barn, place and the surface of the pigs that the affected pigs had contacted.
1. The scope and methods of disinfection in farms
Pig farm disinfection: Disinfection tanks are placed at the entrances of pig farms and pig houses. Disinfectants are placed in the pig farms and pigs. This is the first pass to prevent the introduction of pathogenic microorganisms. Disinfectant in the disinfection tank should be replaced regularly to ensure the disinfection effect.
Pig house disinfection: The ground can be sprayed with disinfectant solution first, and then thoroughly cleaned (in order to prevent the pathogens from flying when cleaning), the removed dirt is disinfected according to the excrement, and then the disinfectant is used to cover the ceiling, wall, fence, door and window, and feed trough. Ground, appliances and doorway are evenly sprayed.
Appliance disinfection: drinking fountains, food troughs should always be brushed with water, wash once a week with disinfectant.
Pig body disinfection: Pig body disinfection can prevent the occurrence of respiratory diseases in pigs and kill microorganisms floating in the air in the pig house. During the onset, the pigs were sprayed two or three times a day.
Sports field disinfection: The stadium should be regularly cleaned, remove feces, etc., regularly washed, spray disinfection liquid.
Faeces disinfection: Faeces are piled and fermented and sterilized. The principle is to use the heat produced by the excrement itself to kill pathogenic microorganisms and parasite eggs. This method is also called biological thermal disinfection. There are two kinds of fermentation tank method and heap manure method: The fermentation tank method digs a simple fermentation tank according to the amount of excrement, pours wastes such as feces, mat grass and so on that are removed every day. The stacking should be loose, and when it is full, a layer is laid. The excrement of healthy pigs or hay, plus a layer of soil, is sealed and used as a fertilizer after fermentation for one month; the excrement method is used to excavate 20cm to 30cm deep in the place where the excrement is piled, and first a layer of dry excrement or weeds is placed. Add some mat grass or weeds when dilute feces, and apply a layer of mud on the outside of the whole dung heap. After one month of fermentation, the purpose of disinfection can be achieved.
Breeding personnel disinfection: Keeping staff members to change clothes when they go to work, the chance of contact with the hands and pigs is the main medium for disease transmission, so often wash hands with disinfectant.
Corpse Handling and Disinfection: In accordance with Article 16 of the "Animal Epidemic Prevention Law" on animal deaths or dead animals whose bodies are unknown, they must not be disposed of arbitrarily. All dead pigs or pigs whose cause of death is unknown should be disposed of in the following manner: Strictly according to animal epidemic prevention The site designated by the supervision department shall be transported strictly for harmless treatment; it shall be incinerated, buried, and selected from people, animals, farmhouses, water sources, and places far away from the breeding site, digging and burying deeply, and the disinfectant shall be sprayed around after deep-buried.
2. Selection of disinfectant
It is understood that in addition to the traditional use of disinfectants, a large number of new and highly effective disinfectants are on the market. When choosing disinfectants, they should be based on the principles of high efficiency, economy, and harmlessness of humans and animals. We recommend ODF and VIO manufactured by Sinde.
Human chorionic gonadotropin is a hormone for the maternal recognition of pregnancy produced by trophoblast cells
Human chorionic gonadotropin (HCG) is a glycoprotein secreted by trophoblast cells of the placenta And β dimer proteins. The molecular weight of glycoprotein hormone 36700, A. Pituitary, FSH, follicle stimulating hormone, LH (luteinizing hormone) and TSH (thyroid stimulating hormone) are basically similar, So they can cross-react with each other, while the structure of β subunit is not similar. In mature women, the fertilized ova move to the uterine cavity for implantation and form embryos. In the process of development and growth into the fetus, the placental syncytiotrophoblast cells produce a large amount of HCG, which can be excreted into urine through the blood circulation of pregnant women. Serum and urine HCG levels rise Rapidly from 1 to 2.5 weeks of gestation, reaching a peak at 8 weeks of gestation and dropping to moderate levels at 4 months of gestation, which remain at the end of gestation. At present, the commonly used detection methods are: latex aggregation inhibition test and hemagglutination inhibition test; Radioimmunoassay (RIA); Enzyme linked immunosorbent assay (ELISA); Monoclonal antibody colloidal gold test
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