Table 5 Mean worm burdens of Haemonchus contortus, Telodorsagia circumcincta and Nematodirus spp. in tracer lambs used in the field trial conducted in southern Sweden, for the grazing season 2003.
From: Evaluation of Copper Supplementation to Control Haemonchus contortusInfections of Sheep in Sweden
Tracer Test | Control Group | COWP Treatment | ||||
|---|---|---|---|---|---|---|
H. cont. | T. circ. | Nem. spp | H. cont. | T. circ. | Nem. spp | |
Turnout Test | ||||||
(12/5 – 3/6)# | 0 | 0 | 0 | 0 | 0 | 0 |
Autumn Tests | ||||||
1(19/8 – 1/9) | 0 | 100 (0%)* | 50 (0%) | 0 | 450 (0%) | 50 |
2(1/9 – 15/9) | 50 (100%) | 650 (0%) | 50 (0%) | 100 (100%) | 400 (0%) | 0 |
3(15/9 – 6/10) | 75 (100%) | 900 (8%) | 50 (0%) | 50 (100%) | 700 (5%) | 0 |
4(6/10 – 27/10) | 0 | 675 (100%) | 50 (0%) | 0 | 475 (100%) | 0 |