PREVALENCE OF MIXED PARASITIC INVASIONS IN SHEEP IN EASTERN KAZAKHSTAN AND ABAY REGION
Keywords:
Eimeria, eimeriosis, Eimeria ovinoidalis, Strongyloides papillosus, strongyloidiasis, sheep, mixed infection, parasitocenosis.Abstract
The article presents the results of a study of the species composition, distribution, age and seasonal dynamics of Eimeria, Strongyloides and mixed Eimeria–Strongyloides infestations in sheep in Eastern Kazakhstan and the Abay Region of the Republic of Kazakhstan. The study was conducted in 2024–2026. A total of 1,800 sheep were examined, including 1,440 animals in Eastern Kazakhstan and 360 animals in the Abay Region. Parasitological investigations were performed using complete helminthological examinations and intravital diagnostic methods. Fecal samples were examined for Eimeria oocysts and helminth eggs followed by microscopic examination. Eimeria species were identified based on the morphological characteristics of oocysts, sporocysts and sporozoites. Seven Eimeria species were identified: Eimeria ahsata, E. crandallis, E. faurei, E. intricata, E. ovina, E. ovinoidalis and E. parva, as well as one nematode species, Strongyloides papillosus. In Eastern Kazakhstan, Eimeria monoinfection was detected in 441 sheep (30.8%), Strongyloides infection in 125 sheep (8.7%), and mixed Eimeria–Strongyloides infection in 388 animals (26.9%). In the Abay Region, the corresponding rates were 33.6%, 13.1% and 25.0%, respectively. Infection rates depended on animal age, season and geographical grazing zone. The highest prevalence of Eimeria infection was observed in lambs younger than one year, whereas Strongyloides infection was more frequently detected in animals older than one year. The highest intensity of Eimeria infection was recorded during summer. The results demonstrate the need for comprehensive parasitological diagnosis and differentiated preventive measures based on animal age and seasonal patterns of infection.
Downloads
Downloads
Published
Issue
Section
License
Copyright (c) 2026 The editorial staff of the journal follows the copyright law of the Republic of Kazakhstan and relevant international agreements. The authors retain their copyright and provide the journal «Bulletin of Shakarim University. Series of Historical Sciences» right of first publication of the manuscript. The author has the right to copy and distribute the material in any medium and in any format, subject to appropriate reference to the journal. Readers and users can freely copy, distribute and adapt the material, provided that the author of the work is indicated and a link to this journal is provided. Copyright presupposes the integrity and responsibility of each co-author who made a significant contribution to the writing of the article. The author has the right to store his publications in an institutional or other repository of his choice, provided he provides the appropriate link to the journal’s website.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright presupposes the integrity and responsibility of each co-author who made a significant contribution to the writing of the article.
The author has the right to store his publications in an institutional or other repository of his choice, provided he provides the appropriate link to the journal’s website.
