Infectious bronchitis virus (IBV) has been a hot topic in some parts of Canada recently, with the emergence of variant serotypes that we had never contended with before. But what does an IBV challenge look like?
Infectious bronchitis can be a frustrating disease, because it can look like a lot of different things other than just the respiratory disease that we often associate with IBV. For example, an increase in airsacculitis condemnations at the processing plant may initially be thought of as a systemic bacterial issue, when in fact, an underlying IBV challenge may have played a part in creating what we are observing. Likewise, excessively wet litter may initially be associated with some sort of digestive dysfunction, when in fact, birds may have suffered a degree of kidney damage as a result of certain bronchitis types which prefer to grow in the kidneys. In these particular cases, the damage can be so extensive that we see an increase in mortality. In laying birds, we can often see egg-associated issues, including poor shell quality and drops in egg production. So if IBV can look like so many different things, how can we truly determine that we have a bronchitis issue?