Division 5.2.2 Number of ducks, geese and mallards to be sampled in the holding

The numbers of ducks, geese and mallards to be sampled in the poultry holding shall be defined so as to ensure 95 % probability of identifying at least one bird that tests sero-positive for avian influenza where the prevalence of sero-positive birds is ≥ 30 %.

Twenty blood samples^f1 shall be taken for serological testing from each selected poultry holding.