Skip to main content

Table 1 Mean worm burdens in the abomasum and small intestine of lambs with 6-week old nematode infections either untreated, receiving daily mineral supplement with copper, or receiving COWP.

From: Evaluation of Copper Supplementation to Control Haemonchus contortusInfections of Sheep in Sweden

  Group 1 Control Group 2 Cu Supplement p value 1 v's 2 Group 3 COWP p value 1 v's 3
Abomasum      
H. contortus      
Adults 560 510 0.56 15 <0.001
Early L4 1525 1515 0.96 655 <0.001
Total 2085 (73%)* 2025 (75%) 0.74 670 (98%) <0.001
T. circumcincta      
Adults 220 85 0.14 60 0.06
Early L4 265 125 0.06 65 0.01
Total 485 (55%) 210 (60%) 0.06 125 (53%) 0.01
T. axei      
Adults 100 135 0.41 60 0.30
Early L4 0 0   0  
Total 100 135 0.41 60 0.30
Small Intestine      
Trichostrongylus spp.      
Adults 200 185 0.79 125 0.25
L4 0 0   0  
Total 200 185 0.79 125 0.25
Nematodirus spp.      
Adults 135 15 0.10 85 0.50
L4 0 0   10  
Total 135 15 0.10 95 0.50
Cooperia spp.      
Adults 10 15   0  
L4 40 10   0  
Total 50 25   0  
  1. * number in parenthesis represents the percentage of infection as early L4 larvae