# The Poultry Laying Flocks (Testing and Registration etc.) Order 1989, Paragraph 3


For the purposes of paragraphs 1(e) and 2 above the number of sites from which individual faeces samples are to be taken in order to make a composite sample and the number of cloacal swabs to be taken shall be calculated as follows:–
Number of birds kept in a house or, on premises on which birds have free access to more than one house, number of birds in each group of houses on such premises
Number of sites in that house or in each group of houses on which birds have free access to more than one houses on those premises from which individual faeces samples are to be taken or number of cloacal swabs to be taken in that house or in that group of houses on those premises
1 – 29
A number equal to the total number of birds up to a maximum of 20
30 – 39
25
40 – 49
30
50 – 59
35
60 – 89
40
90 – 199
50
200 – 499
55
500 or more
60

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Source: https://www.legislation.gov.uk/uksi/1989/1964/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/poultry-laying-flocks-testing-and-registration-etc-order-1989/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.