Seasonal characteristics of quantitative and qualitative blood characteristics deer even breed
https://doi.org/10.52419/issn2072-2419.2026.1.275
Abstract
The article presents the results of an assessment of the quantitative and qualitative characteristics of the blood of Even domestic reindeer depending on the season. Biological material was collected dynamically in accordance with the provisions of the Declaration of Helsinki from Even animals of various ages. The influence of the pronounced seasonality of the feeding behavior of domestic reindeer in the Sakha Republic (Yakutia) on the morphological and biochemical parameters of the blood of various age groups of experimental animals, including lactating females, was established. Thus, the parameters such as the red blood cell count (RBC) and hemoglobin content (Hb) are most determined by age and season, with the lowest values recorded in newborn calves, reaching peak values in the autumn period at 9 months of age. The hematocrit of the newborn calf was also relatively low (35.4%), showing a significant increase in the summer and reaching a maximum (48.9%) and adult levels in the fall, while positively correlating with Hb (r = 0.93) and with RBC (r = 0.77). The white blood cell (WBC) count ranged from 6.1 to 10.1 x 109/L and showed a significant increase during the first weeks of life (P < 0.01), reaching maximum and adult levels in the fall. The serum iron concentration in the newborn calf was quite low (26.4 μmol/L), but almost doubled during the first summer, with values being slightly higher in calves than in females in summer and fall. The obtained variations in blood composition, in our opinion, can be used as predictors of animal survival and calving success, as well as for determining reference values for the blood of Even reindeer.
About the Authors
E. Yu. Fedorova
GAOU HE "Moscow City Pedagogical University"
Russian Federation
Russian Federation
Doctor of Biological Sciences, Professor
V. I. Maksimov
FGOU IN MGAVMiB named after K.I. Scriabin
Russian Federation
Russian Federation
Doctor of Biological Sciences, Professor
A. D. Kozlovsky
GAOU HE "Moscow City Pedagogical University"
Russian Federation
Russian Federation
magistrant
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For citations:
Fedorova E.Yu., Maksimov V.I., Kozlovsky A.D. Seasonal characteristics of quantitative and qualitative blood characteristics deer even breed. International Journal of Veterinary Medicine. 2026;(1):275-282. (In Russ.) https://doi.org/10.52419/issn2072-2419.2026.1.275
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