Table 1 Prevalence, mean egg counts and results of larval differentiation for cattle naturally infected with gastrointestinal helminth from five different study areas in South Darfur State, Sudan, during the rainy season
| Â | All animals | Sex | Age | Study area | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Male | Female | Young | Adult | Beleil | Kass | Nyala | Rehed Al-Birdi | Tulus | ||
Prevalence of the infection | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | |
 No. of the tested cattle | 443 | 125 | 318 | 234 | 209 | 96 | 63 | 130 | 62 | 92 | |
 No. (%) of the infected cattle | 314 (71) | 96 (77) | 218 (69) | 201 (86) | 113 (54) | 77 (80) | 31 (49) | 103 (79) | 48 (77) | 55 (60) | |
  No. (%) of strongyles | 314 (71) | 96 (77) | 218 (69) | 201 (86) | 113 (54) | 77 (80) | 31 (49) | 103 (79) | 48 (77) | 55 (60) | |
    No. (%) of cattle shedding both strongyles + Strongyloides spp. eggs | 8 (2) | 5 (4) | 3 (1) | 7 (3) | 1 (0.5) | 0 (0) | 0 (0) | 0 (0) | 3 (5) | 5 (5) | |
  Cattle shedding ≥ 150 strongyle epg | 160 (36) | 56 (45) | 104 (33) | 133 (57) | 27 (13) | 28 (29) | 18 (29) | 44 (34) | 37 (60) | 33 (36) | |
Egg count/gram of positive faeces (range) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | |
 Strongyles | 338 (10–4320) | 551 (20–4320) | 244 (10–2860) | 458 (20–4320) | 123 (10–3200) | 147 (20–820) | 167 (10–500) | 223 (20–1340) | 836 (20–4320) | 480 (10–3200) | |
Relative strongyles species composition (%) for coproculturesa, b |  |  |  |  |  |  |  |  |  |  | |
 Haemonchus spp. | 86 |  |  |  |  | 90 | 77 | 80 | 90 | 92 | |
 Trichostrongylus spp. | 10 |  |  |  |  | 10 | 15 | 15 | 5 | 5 | |
 Oesophagostomum/Chabertia spp. | 4 |  |  |  |  | 0 | 8 | 5 | 5 | 3 | |