Indexing

Hospital Based Prevalence of Theileria annulata in Cattle-calves in Bikaner District of Rajasthan

Author: Pavan Goyal

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Abstract

Cattle-calves were screened for Theileria annulata infection at the Teaching Veterinary Clinical Complex, College of Veterinary and Animal Science, Bikaner, regardless of their age, sex, or breed. Giemsa's stain was used to create blood smears and lymph node aspirate smears from the ear veins and enlarged superficial lymph nodes of suspected cow calves, respectively, in order to detect piroplasms and schizonts under oil immersion. Seven instances' blood smear analysis showed the presence of piroplasms. The structure of the erythrocytes showed anisocytosis and poikilocytosis, and the infected erythrocytes appeared as echinocytes. Examination of lymph node aspirate smears showed that only three instances had schizonts in the lymphocytes, and only one of the three cases had merozoites escaping from the infected cell. Accordingly, the lymph node aspirate smear examination and Giemsa-stained blood smear analyses revealed that the hospital-based prevalence of Theileria annulata infection in cattle-calves in Bikaner was 3.2% and 7.5%, respectively.

Keywords

Piroplasms, cattle-calves, Theileria annulata, schizonts, lymph node

Conclusion

The prevalence of Theileria annulata in cattle-calves was determined by the examination of Giemsa-stained blood smears and lymph node aspirate smears and it was found 7.5% and 3.2%, respectively. The analysis of lymph node aspirate smears and thin blood stained with Giemsa is required for the conventional diagnosis of tropical theileriosis. This technique is only effective during the acute phase of the illness, when the parasitemia is high enough to be seen under a microscope. The degree of parasitemia is typically below the threshold for microscopical detection during the chronic and carrier stages.

References

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How to cite this article

Pavan Goyal (2024). Hospital Based Prevalence of Theileria annulata in Cattle-calves in Bikaner District of Rajasthan. Biological Forum – An International Journal, 16(1): 132-135.