Preventing incoming infections is essential to avoid diseases on a poultry farm. Proper biosecurity measures are the first line of defense, but are no guarantee for a healthy flock. Protection via an alerted immune system is the all-important second line of defence, hence the common practice of vaccination.
But when biosecurity is poor, vaccination alone is not enough. If birds are overwhelmed with disease organisms, even a flawless vaccination will eventually fail. Administering vaccines can be done in different ways, depending on the vaccine. On farm drinking water, vaccination is used in next to every flock, however getting this right is not as simple as just putting the vaccine in the water system.
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