Some breeders often use antibiotics such as penicillin, streptomycin, and gentamycin to prevent chickens from vaccinating when they are vaccinated against Newcastle disease virus and infectious bursal disease and other viral vaccines. Reduced body resistance and secondary infection of bacterial diseases. In fact, antibiotics are added when diluting vaccines, especially when they are added in high doses. These antibacterial drugs will change the osmotic pressure and pH of the vaccine diluent and affect the activity of the vaccine virus. It will not effectively stimulate the body to produce high levels of antibodies. Affect the immune effect, and even lead to immune failure.
Under normal circumstances, antibiotics should be stopped within 1 day before and after vaccination. In particular, penicillin, chloramphenicol, gentamicin, streptomycin, and sulfa drugs should not be used because of its immunosuppressive effects. If it is necessary to add antibacterial drugs, it can be administered by different routes from vaccination. For example, when Neoin 1 is injected intramuscularly, enrofloxacin and other drugs can be taken orally. In the first 3 days and 3 days after bacterial bacterin inoculation, chickens are prohibited from using vaccine-sensitive drugs.
In addition, some immune boosters such as immune nutrients, astragalus polysaccharides, and pujing can be administered within the first five days of vaccination. This will not only relieve the stress caused by vaccination against chickens, but also stimulate the immune system of chickens. , enhance the immune effect.
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