EFFECTS OF EXPERIMENTAL TRYPANOSOMA EVANSI INFECTION ON RED SOKOTO DOES
Abstract
Trypanosomosis is an infectious disease caused by Trypanosome species. The study was designed to determine the effect of Trypanosoma evansi on Red Sokoto Does (RSD). Ten RSD ˂ 2 years old with an average weight of 12.4 kg were divided into 2 groups (A and B) comprising 5 RSD each. They were acclimatized for 2 months during which they were prophylactically dewormed against helminths. RSDs in group B were infected with blood containing about 1 × 106 cells of T. evansi through the jugular vein and monitored for 10 weeks. Parasitaemia was used to determine the pre-patent period (PPP) while rectal temperature, packed cell volume (PCV) and body weight were evaluated. The PPP was 10.8±1.79 days and there were no clinical signs suggestive of trypanosomosis throughout the study. The rectal temperature and body weight were not significantly (P ˃ 0.05) different between the infected and the control. PCV significantly (P ˂ 0.05) decrease from week 2-4 but was not significantly (P ˃ 0.05) different subsequently till the end of the study. This study shows that the isolate of T. evansi used was mildly pathogenic to the RSD.
Keywords: Trypanosoma evansi, Parasite, Temperature, Anaemia, Red Sokoto Doe
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