1 Department of Parasitology, College of Veterinary Medicine, University of AL-BUTANA, Sudan.
2 Department of Parasitology, College of Veterinary Medicine, University of Khartoum, Sudan.
* Corresponding Author
ORCID Details:
Gayes Abdallah Abdallah Awadallah: https://orcid.org/0009-0007-4314-7626
GSC Biological and Pharmaceutical Sciences, 2026, 37(01), 142–147
Article DOI: 10.30574/gscbps.2026.37.1.0350
Received on 28 August 2026; revised on 11 October 2026; accepted on 13 October 2026
Background: Nematodirus spp. is gastrointestinal nematodes of economic importance in sheep, especially lambs.
Objective: To determine the prevalence and risk factors of Nematodirus spp. infection in relation to age, sex, breed and body condition using flotation and sedimentation techniques.
Materials and Methods: A cross-sectional study was conducted from April to May 2022 at Tamboul Slaughterhouse. 300 rectal fecal samples were examined by saturated salt flotation and water sedimentation. Data on age, sex, breed and BCS were analyzed using Chi-square.
Results: Overall prevalence was 1.0% (3/300). All positives were in lambs <6 months 3.0% (3/100). Prevalence was higher in crossbred sheep 2.1% (3/140) vs 0.0% (0/160) in local breeds. Poor BCS 1-2 showed 2.5% (3/120). Sedimentation detected 100% of positives vs 66.7% by flotation. No statistical significance was found for any risk factor P>0.05.
Conclusion: Nematodirus infection was low and limited to young crossbred lambs with poor body condition. Local breeds showed apparent resistance, likely due to adaptation. Combined coprological techniques are recommended for diagnosis.
Nematodirus Spp., Coprological Survey, Flotation, Sedimentation, Sheep, Breed, Body Condition, Gezira State, Sudan
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Gayes Abdallah Abdallah Awadallah, Awad Mahgoup Atta El-mnnan and Gailani Ali Elamin. EPIDEMIOLOGY AND RISK FACTORS OF NEMATODIRUS SPP. INFECTION IN SLAUGHTERED SHEEP AT TAMBOUL ABATTOIR, GEZIRA STATE, SUDAN: A COPROLOGICAL SURVEY USING FLOTATION AND SEDIMENTATION TECHNIQUES. GSC Biological and Pharmaceutical Sciences, 2026, 37(01), 142–147. Article DOI: https://doi.org/10.30574/gscbps.2026.37.1.0350.