Bapak Beno
South Kalimantan
Is it appropriate if nd-AI revaccination is done every 3 months in laying hens?
Answer:
In drawing up the vaccination program AI and ND in laying hens should take into account the case history of the disease, the age of the chickens, records monitor antibody titer, as well as the type of vaccine used (active or inactivated vaccine). The implementation of the ND vaccination program in chickens currently shows an increasing frequency, especially in laying hen farms. The distance between one nd vaccine and the next nd vaccine repetition is getting closer.
Inactivated ND and AI vaccines will begin to produce antibodies at 1 week after vaccination and they will reach a titer capable of protecting chickens (protective) at 3-4 weeks after vaccination. Furthermore, the antibody titer still increases continuously for a relatively long time and then decreases again. Better do it anyway monitor antibody titer every month to monitor the status of antibody titer. You can do this Test at MediLab (Medion Laboratories).
Based on the pattern of antibody protection, the timing of vaccination using inactivated vaccines can be given 3-4 weeks before the time the disease attacks. As a general guide, we provide the ND-AI vaccination program for laying hens as follows:
