2. Different immunization methods inject different parts, so farmers should pay attention to choose good immunization methods, learn operation methods, operation proficiency will affect the effect of vaccination, chickens should be timely immunized.
3. Don't neglect the disinfection work of chicken house: vaccination is to make chickens produce antibodies, but the duration of antibody maintenance is related to the number of viruses in the environment. So if the environment of chicken house is poor and there are more bacterial viruses, the duration of chicken antibody maintenance will be shortened. So although the immunization of chicken house is normal, it is not noticed. If you want to disinfect everyday, you will still be susceptible to disease.
4. Vaccine selection: The quality of vaccines also has a great relationship with the effect after vaccination, so breeders must choose quality assurance, manufacturers are regular, and when choosing vaccines, they should pay attention to the production and quality date of vaccines. In addition, breeders should pay attention to keeping vaccines in strict accordance with the requirements of low temperature preservation, random storage at natural temperature will affect the effect.
5. The immunized farmers all know that there are oil vaccine and live vaccine, but many farmers pay more attention to oil vaccine and ignore the prevention of live vaccine, but although the use of oil vaccine injection is relatively uniform and the antibody maintenance time is longer, it can only improve the level of antibody in the blood, and can not improve the level of antibody in respiratory mucosa, so it can not effectively prevent the virus. Infection from the respiratory tract. The reliable way to use vaccine is to combine oil vaccine with live vaccine.
6. The dosage of vaccine is too large: many farmers think that the more the live virus vaccine is used, the better, but it is incorrect. If used more, chickens will produce toxic reactions, cause respiratory symptoms, or produce immune paralysis. If used more, the vaccine will not produce antibodies.
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