"sentinel chickens" refers to the epidemic prevention departments for monitoring, warning, farm birds test laboratories or whether there was contamination of the virus, will be in place to place within any part of the injection is no vaccine for healthy chickens, "striker "Once the virus from entering the premises by, to take the lead in the sentinel chickens will be the first" dead "to prove that the virus is still in place; On the other hand if the sentinel chickens and healthy life, and the extraction of the blood or liquid through the throat virus isolation and confirmed that detection of virus-free After infection, epidemic prevention departments can be found in the place is clean zone.
Agriculture, Fisheries and Conservation Department spokesman explained that since Hong Kong in 1997 after the introduction of "sentinel chickens" system will be in the entrance of each batch of chickens or chicks in the selection of 60 chicken as "sentinel chickens."
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