University of Khartoum

Haematological Changes in Cattle Infected with Theileria annulata in Khartoum State

Haematological Changes in Cattle Infected with Theileria annulata in Khartoum State

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Title: Haematological Changes in Cattle Infected with Theileria annulata in Khartoum State
Author: Erneo Bernardo Ochi, Ochi
Abstract: The aim of this study was to determine haematological changes in 45 cattle infected with a field strain of Theileria annulata in Khartoum State as compared to similar changes studied in a calf experimentally infected with the same parasite. Negative controls were included as a non-infected calf and 30 apparently healthy cattle. It was found that the calf experimentally infected with T. annulata revealed a fall in packed cells volume (PCV) from 33 to 16%, haemoglobin (Hb) from 10.2 to 5.1 gm/100 ml, total erythrocyte count (TEC) from 8.25 x 106 to 3.25 x 106/microlitre and in total leucocytic count (TLC) from 10.95 x 103 to 2.8 x 103/microlitre. The 45 cattle naturally infected revealed a fall of PCV ranging between 22 and 15%, Hb gm/100 ml ranging between 7.1 to 4.8, TEC ranging between 8.25 x 106 and 3.25 x 106/microlitre and TLC ranged between 4.25 x 103 and 2.65 x 103/microlitre. Platelets count declined from 401.58 x 103 to 166.12 x 103/microlitre in a calf and it ranged between 381.22 x 103 and 201.57 x 103/microlitre in the infected cattle. This study showed normocytic normchromic anaemia in both groups, as well as a decrease in differential leucocytic count, which included neutrophils, lymphocytes, monocytes, eosinophils and basophils. Immature neutrophils were observed. The negative controls in both groups demonstrated slight variations which fell within the normal for cattle. This study should be used as a monitor for the stage of the disease caused by T. annulata and as a measure for resistance and thus resistance to secondary infections.
URI: http://khartoumspace.uofk.edu/handle/123456789/15246
Date: 2015-06-28


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