How do I identify PI animals?
There are many ways to search for a PI animal, we provide a tag and test service using BVDGB Dalton Tags approved Caisley cattletags. It is often best to start your PI search with new born calves and young stock but older animals within the herd can also be PI’s and should never be overlooked.
Tissue testing (newly born) calves is very cost effective and gives you ‘two tests for the cost of one’ where your result tells you the calf is clear, ie. not Persistently Infected (PI), that clears their mother too. Stillborn calves and even an aborted foetus should be tested as this could indicate BVD is present. Any PI positives should be isolated and re-tested within three weeks to ensure were not merely Transiently Infected and have since recovered.