Department of Animal Science, Faculty of Agriculture, University of Yüzüncü Yil, Turkiye.
Comp Biochem Physiol A Mol Integr Physiol. 2011 Sep;160(1):68-71. doi: 10.1016/j.cbpa.2011.05.006. Epub 2011 May 14.
The antioxidant protection of the chicken (Gallus gallus) embryo during incubation and early postnatal development plays an important role in chick viability. To assess the antioxidant capacity of the newly hatched chick, we determined the concentrations of vitamin A, vitamin E, carotenoids and coenzyme Q₁₀ in the major tissues of chicks which had been held in an incubator for up to 36 h post-hatch. Concentrations of total carotenoids and free retinol and retinol esters in the tissues did not differ significantly over the 36 h period post-hatch (p>0.05). In contrast concentrations of vitamin E (α-tocopherol, γ-tocopherol, and α-tocotrienol and γ-tocotrienol) in various tissues (liver, heart, brain and leg muscle) decreased significantly in chicks that had been held in the incubator for 36 h when compared to younger chicks that were held for up to 18 h. Comparatively high concentrations of coenzyme Q₁₀ were detected in the yolk sac membrane, liver and heart, the concentrations being dependent on age of chicks, the highest value being recorded 18 h post-hatch. In most of the tissues studied, coenzyme Q₁₀ concentrations decreased substantially between 18 and 36 h post-hatch. This study demonstrated that there are tissue-specific changes in the concentrations of the major antioxidants (vitamin E and coenzyme Q₁₀) during the 36 h post-hatch.
鸡胚胎在孵化和早期产后发育过程中的抗氧化保护对雏鸡的活力起着重要作用。为了评估刚孵出的雏鸡的抗氧化能力，我们测定了在孵化箱中孵育长达 36 小时后雏鸡主要组织中维生素 A、维生素 E、类胡萝卜素和辅酶 Q₁₀的浓度。组织中总类胡萝卜素和游离视黄醇及视黄醇酯的浓度在孵化后 36 小时内没有显著差异（p＞0.05）。相比之下，在孵化箱中孵育 36 小时的雏鸡各组织（肝、心、脑和腿肌）中的维生素 E（α-生育酚、γ-生育酚、α-生育三烯酚和γ-生育三烯酚）浓度与孵育 18 小时的雏鸡相比显著降低。在蛋黄囊膜、肝和心中检测到相对较高浓度的辅酶 Q₁₀，其浓度取决于雏鸡的年龄，在孵化后 18 小时记录到最高值。在大多数研究的组织中，辅酶 Q₁₀浓度在孵化后 18 至 36 小时之间显著下降。这项研究表明，在孵化后 36 小时内，主要抗氧化剂（维生素 E 和辅酶 Q₁₀）的浓度存在组织特异性变化。
