Effect of Selenium supplementation on White Blood Cell Count in Awassi ewes
Effect of Selenium supplementation on White Blood Cell Count in Awassi ewes
Alyaa S.K. Al-Shammari1, Mozhir K.K. Almahdawi2*, Manar H. Allawi3, Abdul Sattar S.S.Al-Bayati2
ABSTRACT
The aim of the current experiment was to evaluate the effects of selenium (Se) supplementation on white blood cells in non-pregnant, pregnant, and lactating Awassi ewes. Thirty ewes were divided into three groups, each containing 10 animals: the control group C (without Se supplementation), and two experimental groups, E1 (with sodium selenite supplementation) and E2 (with organic Se supplementation). All ewes became pregnant during the experimental period (July 2022 to March 2023), and the treatments were continued until two months after parturition. The total leukocyte count and differential white blood cells in blood smears were determined through microscopic examination, while the CD8+ and CD4+ subsets of T lymphocytes were assessed using flow cytometry. A significant (P≤0.05) reduction in leukocyte counts was observed during the gestation period in all experimental groups. In the lactation period, there was a significant (P≤0.05) elevation in the levels of total white blood cell count, percentage of lymphocytes, and CD4+ and CD8+ subsets of T lymphocytes in the E1 and E2 groups in comparison to the control group. The results of the present experiment revealed that the supplementation of selenium has effects on the leukocyte counts in lactating Awassi ewes.
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