Haemoparasites of equine and their effect on blood parameters during winter season
2002
Shehzad, W. | Hashmi, H.A. | Ashraf, K. | Aslam, A. (University of Veterinary and Animal Sciences, Lahore (Pakistan))
The present study was conducted between November 1999 and January 2000 to find out the prevalence and to study the taxonomy of haemoparasites of horses. In addition, their effect on hematological parameters was also studied. A total of 40 out of 435 horses (9.2%) were found positive for haemoparasites. Out of positive animals 22 (5.06%) were positive for babesia species, of which 10 (45.45%) were infected with B. egui, 6 (27.27%) were infected with B. caballi and 6 (27.27%) were positive with mixed infection of B. egui and B. caballi. out of remaining positive cases, 14 (3.22%) were positive for T. evansi and 4 (0.92%) were positive for P. multipapillosa. Animals of group A, belonged to all the places of other groups. Animals of group B showed 10.52% prevalence for haemoparasites, Babesia spp. was present in 6 (6.31%) and T. evansi was present in 4 (4.21%) animals, respectively. Horses of group C showed prevalence as 14.28% haemoparasites out of which 6 (8.57%) were positive for babesia species, and 4 (5.71%) positive for T. evansi. Similarly, animals in group D, indicated 11.11% prevalence of haemoparasites including babesia species 3 (3.33%), T. evansi 3 (3.3%) and P. multipapillosa, 4 (4.44%) respectively. The horses of group E showed 10 out of 180 (5.56%) cases were positive for haemoparasites of 10 positive cases 7 (3.89%) were positive for Babesia spp. and 3 (1.66%) were positive for Trypanosoma evansi. Hematological examination revealed a significant decrease (P less than 0.05) in the total erythrocyte count, total leukocyte count, haemoglobin estimation, packed cell volume, neutrophils and basophils in the infected horses as compared with healthy horses. However, there was a significant increase (P less than 0.05) in lymphocytes and eosinophils in the infected horses as compared with healthy horses of group A.
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