Changes of reproductive indices of the testis due to Trypanosoma evansi infection in dromedary bulls (Camelus dromedarius): Semen picture, hormonal profile, histopathology, oxidative parameters, and hematobiochemical profile

Authors

  • Yahia A Amin Department of Theriogenology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt.
  • Enas A Noseer Department of Biochemistry, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt.
  • Samer S Fouad PHD of Clinical Pathology of Veterinary Medicine, Qena University Hospital, South Valley University, Qena, Egypt.
  • Rana A Ali Department of Zoology, Faculty of Science, South Valley University, Qena, Egypt.
  • Hassan Y A H Mahmoud Division of Infectious Diseases, Animal Medicine Department, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.

Keywords:

Dromedary camel; reproductive failure; testicular degeneration; trypanosomiasis

Abstract

Objectives: This study was designed for the investigation of the effect of infection by Trypanosoma evansi on the changes of reproductive indices of the testis, causing reproductive failure in drom­edary bulls (Camelus dromedarius).  Material and methods: Seventy-five bulls were used for monitoring of the changes in the semen characteristics, reproductive hormones, hematobiochemical profiles, histopathological charac­ters in the testis, and oxidative biomarkers. The animals were divided into two groups. Group A represented the uninfected or control group, while group B represented the infected group. Group B was again divided into two subgroups, such as acute and chronic infected animals.  Results: Results showed that the semen analysis of infected camels revealed the presence of alterations in the morphology of sperms, especially the heads and tails, as compared to control animals. The hormonal profile indicated a significant decrease in the luteinizing hormone, folli­cle-stimulating hormone, and testosterone levels, accompanied by the rise in the cortisol level in infected camels compared with the negative control. The histopathology and testicular degener­ation were found to be associated with other disorders in infected camels. The oxidative profile and protein oxidation were promoted in infected testicles, indicating the occurrence of harmful effects in the cell.  Conclusion: It is concluded that T. evansi infection in dromedary bulls causes severe damage to the testicular tissue and decreases the reproductive hormone levels associated with severe mor­phological disorders in sperms due to oxidative stress resulting from the infection. All these find­ings indicate that T. evansi can cause reproductive failure and fertility damage.

J. Adv. Vet. Anim. Res., 7(3): 537-545, Sep 2020

http://doi.org/10.5455/javar.2020.g451

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Published

2020-08-25

How to Cite

Amin, Y. A., Noseer, E. A., Fouad, S. S., Ali, R. A., & Mahmoud, H. Y. A. H. (2020). Changes of reproductive indices of the testis due to Trypanosoma evansi infection in dromedary bulls (Camelus dromedarius): Semen picture, hormonal profile, histopathology, oxidative parameters, and hematobiochemical profile. Journal of Advanced Veterinary and Animal Research, 7(3), 537–545. Retrieved from https://banglajol.info/index.php/JAVAR/article/view/75727

Issue

Vol. 7 No. 3 (2020)

Section

Original Articles

License

Copyright (c) 2020 Yahia A Amin, Enas A Noseer, Samer S Fouad, Rana A Ali, Hassan Y A H Mahmoud

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