Division 2.3.2 Secondary sample size (second-stage sample size)

In each selected holding samples shall be collected from 10 randomly chosen pens, yards, or groups of breeding pigs. If necessary (for example, in farrowing accommodation or where sows are kept in small groups of less than 10 individuals), a group can consist of more than one pen. At least 10 individual breeding pigs should contribute to each routine Salmonella sample.

However, where on smallholdings or holdings with large numbers of breeding pigs kept outdoors in paddocks, the number of pens, yards or groups is less than 10, sampling of the same pen, yard, or group shall be required so that a total of 10 routine Salmonella samples are submitted.