How to do well the disinfection work of the farm

Animal excreta, secretions and animal carcasses produced in livestock and poultry farms will attract a large number of mosquitoes, flies, mice, wild birds and so on, and breed a large number of pathogenic microorganisms. The soil, water, air and human around the breeding site can become the vectors of pathogen transmission. It can be said that animal diseases threaten the health of livestock and poultry in farms all the time. Once animal diseases break out, it will be too late to take measures. In order to reduce the pathogenic microorganisms in the surrounding environment of animals, prevent pathogenic microorganisms from infecting animals, and prevent and control the occurrence of epidemic diseases, "disinfection" is an effective measure for farms.

Disinfection is to use physical, chemical or biological methods to remove or kill the pathogenic microorganisms in the external environment, reduce the pathogenic microorganisms in the surrounding environment of animals to a minimum, and cut off the transmission of animal epidemics, so as to effectively control the occurrence and spread of various animal diseases.

There are four commonly used disinfection methods in farms: first, mechanical cleaning, such as cleaning, washing, ventilation, etc., which is the most common and commonly used method; second, physical disinfection, such as ultraviolet lamp, sun exposure, fumigation, steam disinfection, incineration, etc.; third, biological thermal disinfection, the use of heat generated by microbial fermentation to kill pathogens, which is mainly used for harmless treatment of feces The fourth is chemical disinfection, that is, disinfection with chemical disinfectants to kill pathogenic microorganisms.

Farms should do a good job in the following aspects of disinfection.

1. Disinfect the entry and exit personnel. Do not allow outsiders to enter at will. When entering the venue area, personnel must strictly disinfect: change clothes, change shoes, spray and ultraviolet light before entering.

2. Disinfect livestock and poultry houses. After each batch of livestock and poultry is transferred, clean the livestock and poultry house thoroughly, rinse with water, and then spray or fumigate. After an interval of 5-7 days, it can be transferred to the next batch of new livestock and poultry.

3. Environmental disinfection. The environment around the livestock and poultry house should be regularly disinfected with 2% caustic soda or quicklime; around the livestock and poultry farm and within the farm sewage pool, manure pit, sewer outlet, regularly disinfect with bleach. The disinfection pool at the entrance of the gate and livestock and poultry house should be replaced regularly.

4. Disinfect the appliances. Incubators, feed trucks, material boxes, syringes, etc., can be disinfected regularly with 0.1% bromogeramine or 0.2-0.5% peracetic acid, and then fumigated in an airtight room.

5. Take livestock for disinfection. Chlorine-containing disinfectants can be used to disinfect animals regularly, which is helpful to reduce the pathogenic microorganisms in the environment. Disinfect with livestock, do not use aldehyde disinfectant, aldehyde disinfectant can stimulate and solidify the mucous membrane of human body and animal, and will be sensitized. In the use of spray, drinking water, acupuncture and other ways to vaccinate live vaccine, it is best not to carry out disinfection, in order to prevent disinfectant causing live vaccine failure.

6. Disinfect the dung storage site. Livestock and poultry manure should be transported to a dung storage tank far away from the field and fermented uniformly in the hardened cement ground. The area around the dung storage site should be disinfected regularly, which can be disinfected with 2% caustic soda or quicklime.

7. Disinfect the sick body. After the death of livestock and poultry disease, it is necessary to carry out harmless treatment such as deep burial and incineration. At the same time, the original enclosure, isolated breeding area and other places were thoroughly disinfected to prevent the spread of the disease.

Regular and comprehensive disinfection in aquaculture sites can play a very important role in prevention, but disinfection is not omnipotent, and other comprehensive prevention and control measures such as feeding management, immunization, drug health care and so on must be combined. We should not rely too much on the role of disinfection. Zhu Yuyan