The Poulvac IB from Zoetis is a vaccine primer for use during the laying period. This product protects laying flocks against infectious bronchitis (IB).
Poulvac IB primer is the only bivalent live IB vaccine licensed for use in lay, containing both the Massachusetts and Dutch variant strains. No other live IB vaccines licensed for use in lay contain the Dutch variant strain. This unique inclusion helps to broaden the immune responses of the birds against the various and constantly evolving field strain challenges they may face. In addition, the vaccine has been shown to have a 16-week duration of immunity, reducing the need for frequent revaccination during the laying period.
