Table 2 Mean (± SEM) total worm burden and mean percentage prevalence of strongylid species present over four tracer lambs in each of the 4 treatment groups and each year and season of the study. ‘-‘means that the species was not present
Group | Year | Season | Total worm burden | % Te. circ | % Tr. axei | % Tr. vit | % Tr. col | % O. ven | % C. ovina | % T. ovis |
|---|---|---|---|---|---|---|---|---|---|---|
NST | 2006 | Early | 1488 (±597) | 25.0 | – | 28.1 | – | 8.8 | 11.7 | 26.4 |
Late | 12,184 (±4473) | 79.9 | 4.1 | 15.2 | – | – | – | 0.8 | ||
2011 | Early | 2594 (±774) | 94.8 | 1.7 | 2.5 | – | – | 1.0 | – | |
Late | 23,954 (±3942) | 94.1 | 2.2 | 3.8 | – | – | – | – | ||
TST | 2006 | Early | 2537 (±1206) | 47.9 | – | 7.7 | – | 9.8 | 31.1 | 3.5 |
Late | 36,317 (±20,307) | 48.6 | 0.8 | 50.6 | – | – | – | – | ||
2011 | Early | 5929 (±2277) | 52.2 | – | 47.8 | – | – | – | – | |
Late | 14,586 (±3436) | 63.9 | – | 36.1 | – | – | – | – | ||
SPT | 2006 | Early | 1548 (±1151) | 73.1 | – | 7.3 | – | – | 5.9 | 13.7 |
Late | 41,182 (±20,304) | 54.8 | – | 44.3 | – | 0.9 | – | – | ||
2011 | Early | 2770 (±955) | 70.2 | – | 29.8 | – | – | – | – | |
Late | 27,740 (±4259) | 73.3 | 0.7 | 25.9 | – | – | – | 0.1 | ||
MT | 2006 | Early | 9016 (±3408) | 81.1 | – | 7.1 | 0.3 | 5.7 | 4.4 | 1.4 |
Late | 19,181 (±7313) | 53.6 | – | 45.8 | – | – | – | 0.5 | ||
2011 | Early | 9694 (±2393) | 79.8 | – | 20.2 | – | – | – | – | |
Late | 37,834 (±7184) | 40.4 | 0.4 | 58.9 | – | 0.2 | – | 0.1 |