Seasonal Changes in Plasma Testosterone and Biochemical Parameters of Male Donkey (Equus asinus) in Northern Algeria

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  • Sofiane Aissanou
  • Omar Besseboua
  • Mokhtar Benhanifia
  • Abdelhanine Ayad University of Bejaia


Testosterone, biochemical parameters, season, donkeys, Algeria


This present study was aimed to determine the changes of plasma testosterone in North Algerian donkeys, the correlation coefficients between T concentrations and biochemical parameters were estimated. Blood samples were withdrawn in the morning from the jugular vein into a tube containing EDTA. A total of 24 mature healthy donkeys were selected randomly under condition of free stabling period. T concentrations in male donkeys were measured by enzyme-linked immunosorbent assay kit. AST, ALT and ALP concentration were measured according to the manufacturer recommendation. As regards the concentration of Ch and Tg, the assay was carried out using the automatic biochemical analyzer. The results indicated that T concentration values were significantly (P<0.05) higher in winter and autumn (2.468±0.66 ng/ml and 2.785±0.49 ng/ml, respectively) seasons than in spring and summer (0.95±0.343 ng/ml and 0.745±0.236 ng/ml, respectively) seasons. Likewise, Ch and Tg values were significantly (P<0.05) higher in winter and autumn seasons than in spring and summer seasons. Also, it is also noteworthy that ALT values were significantly (P<0.05) higher in winter and autumn seasons than in spring and summer seasons. Whereas, AST values were significantly (P<0.05) lower in summer than in winter, autumn and spring seasons. As regards ALP, values mean were practically similar in all seasons. Our finding suggests that the sexual activity probably occurs during winter and autumn in local donkeys of Northern Algeria. In addition, our results of Ch and Tg levels are correlated with season, which may be a good indication of the reproductive performance in donkeys.


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How to Cite

Aissanou , S., Besseboua, O., Benhanifia, M., & Ayad, A. (2022). Seasonal Changes in Plasma Testosterone and Biochemical Parameters of Male Donkey (Equus asinus) in Northern Algeria. International Journal of Veterinary and Animal Research (IJVAR), 5(3), 117–122. Retrieved from



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