The U.S. Poultry & Egg Association and the USPOULTRY Foundation have completed a funded research project at the University of Georgia studying infectious bronchitis hatchery vaccination methods for broilers.
Infectious bronchitis is a contagious upper-respiratory tract disease that is difficult to control because several viruses are responsible, and vaccination for one virus type does not protect against all types.
The Arkansas vaccine type is the main virus found in the field indicating that birds are not completely protected against this virus. Combining other infectious bronchitis vaccines at the hatchery with the Arkansas vaccine did not interfere with the effectiveness of the Arkansas vaccine, and the combination of other vaccines with the Arkansas virus actually improved protection.
The Arkansas vaccine did not produce an effect in one-day old broilers when given in a hatchery spray cabinet; however, vaccine given by the eye drop method provided good immunity. This research indicates that hatchery spray may not be the most effective method for giving the Arkansas vaccine, and infectious bronchitis protection can be improved by giving the Arkansas vaccine in conjunction with other infectious bronchitis vaccines.