Investigation of Pathomorphological Signs and Diagnostic Procedures for Saiga Coenurosis
Kushaliyev K. Kuzhebayeva U. Voloshina O.
November-December 2025Unique Scientific Publishers
International Journal of Veterinary Science
2025#14Issue 61302 - 1307 pp.
This study investigates coenurosis in the Ural population of saigas (Saiga tatarica), with a specific focus on its pathomorphological signs, diagnostic techniques, and implications for wildlife health. Coenurosis, caused by the larval stage of Taenia serialis, predominantly affects the central nervous system and is linked to high mortality among young saigas. Field research was conducted in Western Kazakhstan during 2020–2021 and 2024, involving post-mortem examinations of 350 animals. In all cases, parasitic cysts were localized in the left hemisphere of the brain, leading to severe neurological symptoms including motor dysfunction, body asymmetry, and vision loss. Histological examination revealed vascular congestion, focal hemorrhages, necrosis, and karyopyknosis, indicating widespread cerebral damage. Additionally, 82% of animals showed liver lesions, including protein and fatty degeneration, suggesting systemic metabolic disruption. Ophthalmological pathology was observed in 64% of cases, with retinal hemorrhages and hyperemia contributing to visual impairment. Trepanation and histology proved essential for accurate diagnosis. The study also analyzed seasonal migration patterns and ecological factors influencing parasite transmission, noting significant risk associated with interaction between wild and domestic animals. Preventive interventions, such as targeted deworming, migration route adjustments, and habitat monitoring, demonstrated effectiveness in reducing mortality rates.
Cranial trepanation , Füllleborn method , Helminths , Parasitology , Taenia serialis
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Institute of Veterinary and Agrotechnology, West Kazakhstan Agrarian and Technical University named after Zhangir Khan, Uralsk, Kazakhstan
Institute of Veterinary and Agrotechnology
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