Defective applications can be indicated as the common results for the failures of vaccinations in poultries. Planning is crucially important in this application type. Impulsion, conservation and application of vaccination, require a well-educated team in order to get productive results. Disease control and flock performance can be provided with the accurate vaccination applications.
Some of the chickens may not utilize from vaccination in the collective applications which are applied by water or spray. Immunity in flocks is delayed as a result of the reproduction of vaccination virus and horizontal infection. Some poultries will be destitute of protection if an inactive vaccination is applied to the animals.
In the drinking water application, the vaccination virus which are used for water prufication may fragmentize without infecting chicken. Besides, in the intramuscular or subdermal applications, the vaccinated part is substantial to look for in order to avoid immunity. Therefore, controls should be made with the random sampling method within the routine monitoring programs and vaccine labels should be observed attentively.
