Pregnancy and trypanosomosis are associated with leukocyte changes. The leukocyte response of pregnant Yankasa ewes during experimental Trypanosoma evansi infection was determined using twenty pregnant ewes. They ewes were divided into 3 groups with 6 ewes in group A, while groups B and C were made up of 7 ewes each. The ewes in group A served as control, whereas those in group B and C were infected with approximately 1.0 x106 parasites/mL of T. evansi (Sokoto isolate) per ewe through the jugular vein on days 59 and 110 of pregnancy, respectively. Blood from each ewe was collected weekly and used to monitor leukocyte changes from the time of parasitaemia till the end of the study. There was significant (p
Key words: Ewe, Leucocytosis, Leucopenia, Monocytosis, Pregnancy, Trypanosoma evansi
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