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Régulation des populations de Nématodes gastro-intestinaux ...

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Table 3 : Total worm bur<strong>de</strong>n, length and number of eggs in utero of adult female worms, stage and sex composition of Haemonchus contortus<br />

<strong>populations</strong>.<br />

Days post<br />

challenge<br />

4 dpc<br />

(D49)<br />

30 dpc<br />

(D75)<br />

Breed Group<br />

INRA 401<br />

BBB<br />

INRA 401<br />

BBB<br />

Total worm<br />

bur<strong>de</strong>n<br />

(mean +/-<br />

SD)<br />

Adult female<br />

length<br />

(mean +/- SD)<br />

Number of<br />

eggs in utero<br />

(mm)<br />

(mean +/- SD)<br />

L 4<br />

(%)<br />

Immature<br />

males<br />

(%)<br />

Immature<br />

females<br />

(%)<br />

Adult<br />

males<br />

(%)<br />

A 1650 ± 467 a - - 100 - - - -<br />

B 1892 ± 535 a - - 100 - - - -<br />

A 695 ± 458 b - - 100 - - - -<br />

B 1205 ± 246 b - - 100 - - - -<br />

A 4370 ± 902 a 16.8 ± 1.2 a 334 ± 201 a 15 6 7 34 38<br />

B 5558 ± 1763 a 19.8 ± 1.4 b 713 ± 129 b 6 2 4 41 47<br />

A 4274 ± 1980 b 14.8 ± 1.9 a 234 ± 120 a 8 4 5 40 43<br />

B 2465 ± 1623 a 14.6 ± 1.2 a 180 ± 70 a 10 12 13 35 30<br />

a , b : At a given date, means with different letters on the same column are significantly different (P < 0.05).<br />

Adult<br />

females<br />

(%)<br />

Résultats<br />

191

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