Answer ( 1 )

  1. there are 2 ways to vaccinate the chicken against the salmonella .

    killed vaccine ( take bacteria from the sick bird and used in the vaccine and used inactivates )

    live vaccine ( done passages in order to lower the pathogenicity of the bacteria )

    Killed vaccine give through the injection and administered in multiple times

    live vaccine can never be given through the injection but it can be administered through the spray or through drinking water .. it will provide long lasting protection because of the presence of the memory cells …

    Hope u got the point..

    Thanks ..

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