Method |  | Dairy herds (n = 98) | Non-dairy herds (n = 92) | All herds (n = 190) | |||
---|---|---|---|---|---|---|---|
 |  | Number (%) | Positive (%) | Number (%) | Positive (%) | Number (%) | Positive (%) |
F. hepatica Bulk tank milk ELISA | Yes | 48 (49) | 28 (58.3) | NAa | – | – | – |
No | 50 (51) | Â | Â | Â | Â | Â | |
Liver inspection at abattoir | Yes | 32 (32.7) | 24 (75.0) | 23 (25.0) | 16 (69.6) | 55 (28.9) | 40 (72.7) |
No | 36 (36.7) | – | 14 (15.2) | – | 50 (26.3) | – | |
Don’t know | 2 (2.0) | – | 0 (0.0) | – | 2 (1.1) | – | |
NA | 28 (28.6) | – | 55 (59.8) | – | 83 (43.7) | – | |
F. hepatica faecal egg count analysis | Yes | 8 (8.2) | 4 (50.0) | 6 (6.5) | 2 (33.3%) | 14 (7.4) | 6 (42.86) |
No | 90 (91.8) | – | 86 (93.5) | – | 176 (92.6) | – |