| To sustain the viability of the sperm of farm animals, the sperm is chilled. However, reactive oxygen species (ROS) may damage it, resulting in oxidative stress and decreased sperm viability. This study aimed to assess the various concentrations of vitamin D3 as antioxidants in the chilled sperm of Awassi. This study was performed on 23 ejaculates from three Awassi rams. The samples were combined, diluted with Tris-egg yolk extender (1:10), and then divided into aliquots. Aliquots were treated with three vitamin D3 concentrations (T1=0.02, T2=0.004, and T3=0.002 g/ml) and one control without the addition of vitamin D3. The experimental and control groups were chilled to reach 5 ºC. Following treatment, the samples were centrifuged at 2,000 RPM for 20 min at 0 and 72 h after the treatment. Until evaluation, the seminal plasm was stored in a freezer at 20 ºC. In this study, the antioxidant activity of vitamin D3 was evaluated using malondialdehyde (MDA), ROS, total antioxidant capacity (TAC), superoxide dismutase (SOD), and catalase (CAT). The SAS software was used to analyze variance on repeated measures with a single factor. The results indicated that the TAC and SOD were considerably higher in T1, compared to that in T0, T1, and T2. In addition, CAT was considerably higher in T2 than in T0, T1, and T3. However, ROS and MDA did not differ significantly among the experimental groups. Despite the absence of a statistically significant difference among experimental groups, MDA decreased quantitatively on T1, relative to other experimental groups. In conclusion, a deficiency in vitamin D3 has a potential antioxidant capability, introducing a novel method for extending sperm storage. |
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