Division 2

The minimum number of blood samples to be taken must allow for the detection of 10 % seroprevalence with 95 % confidence in pigs in each sub-unit in the holding.

However, in the case of:

• breeding sows, the minimum number of samples to be taken must allow for the detection of 5 % seroprevalence with 95 % confidence;

• a semen collection centre, blood samples must be taken from all boars.