Régulation des populations de Nématodes gastro-intestinaux ...

Table 4 : Egg excretion, total worm burden, stage and sex composition of Trichostrongylus colubriformis populations.
Days post
challenge
4
10
17
28
A
B
A
B
A
B
A
B
Group
Epg
(mean +/- SD)
-
-
-
-
- *
33+/-64 *
395+/-360 *
795+/-272 *
Total worm burden
(mean +/- SD)
2715 ± 611
2270 ± 810
4920 ± 2409
4600 ± 1260
3827 ± 2644
6815 ± 1590
4036 ± 1027
4448 ± 631
L4 (%)
100
100
2.2
2.5
-
-
0.85
Immature
males (%)
-
-
40.4
43.9
3.1
0.5
Immature
females (%)
-
-
40.0
53.6
4.5
0.5
Adult males
(%)
-
-
7.1 (1)
-
37.3
41
Résultats
Adult females
(%)
Group A : previously-infected sheep. Group B : primary-infected sheep. Six animals per group were sacrificed at 4, 10 and 17 days post
challenge ; 9 and 10 sheep were sacrificed at 28 days post challenge for groups A and B respectively.
(1) Adult worms in group A at 10 days post challenge were observed in only one sheep.
*p