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Table 6 Mean resistance allele frequencies (%) ± standard deviation for the F167Y, E198A and F200Y single-nucleotide polymorphisms in isotype 1 β-tubulin gene of Haemonchus placei adult worms from cattle at three different study areas in South Darfur State, Sudan

From: Susceptible trichostrongyloid species mask presence of benzimidazole-resistant Haemonchus contortus in cattle

Isolate No. of pooled samplesa Codon 167 (TAC) Codon 198 (GCA) Codon 200 (TAC)b Codon 200 (TAC)c
Nyala 2 3.00 ± 1.16 12.75 ± 3.10 6.75 ± 1.23 7.50 ± 1.73
Rehed Al-Birdi 3 2.67 ± 0.82 10.50 ± 0.84 5.50 ± 1.38 6.67 ± 0.82
Tulus 3 3.17 ± 0.75 11.33 ± 0.82 5.67 ± 0.52 6.67 ± 0.52
Total 8 2.94 ± 0.85 11.38 ± 1.78 5.88 ± 1.15 6.88 ± 1.03
  1. For each sample, two technical replicates were analysed
  2. aPools of adult male Haemonchus spp. isolated from cattle abomasa at abattoirs (16–100 worm/sample) with unknown history of anthelmintic treatments
  3. bPyrosequencing assays conducted with the sequencing primer for codon 198
  4. cPyrosequencing assays performed with the codon 200 specific sequencing primer