Table 1 The number of suckler herds required for sampling (proportional sample) per region in a Leptospiral seroprevalence study in proportion to the percentage of the National Suckler Herd made up by herds in that region
From: Seroprevalence of Leptospira Hardjo in the Irish suckler cattle population
Suckler cow population | Number of herds | Total Herds % of National Suckler Herd | Proportional Sample Required Number of herds | |
|---|---|---|---|---|
Region 1 | 185,665 | 15,880 | 19.0 | 61 |
Region 2 | 202,787 | 18,140 | 21.7 | 71 |
Region 3 | 186,928 | 10,470 | 12.5 | 40 |
Region 4 | 197,100 | 13,970 | 16.7 | 54 |
Region 5 | 208,816 | 11,880 | 14.2 | 46 |
Region 6 | 205,693 | 13,290 | 15.9 | 51 |