Adipose tissue development is influenced by a variety of factors, including nutrition and genetic background. Among avian species, the most is known in chickens and it is unclear if other less-artificially-selected birds are similar during the first week post-hatch. The aim of this study was thus to determine effects of fasting and refeeding on adipose tissue physiology in Japanese quail (Coturnix japonica). On day 7 post-hatch, quail were randomly assigned to fed (control), 6 h of fasting (fasted), or 6 h of fasting followed by 1 h of refeeding (refed) groups. Blood samples were collected for plasma non-esterified fatty acid (NEFA) determination and subcutaneous adipose tissues were harvested for gene expression analyses. Plasma NEFAs were elevated in the fasted state and restored to baseline within 1 h of refeeding, whereas the expression of monoglyceride lipase in subcutaneous adipose tissue was not affected by feeding status. CCAAT/enhancer binding protein α mRNA was decreased by fasting and this change persisted through refeeding, whereas neuropeptide Y receptor 5 mRNA was decreased in refed compared to fasted birds. Our results suggest that fasting promotes lipolysis and gene expression changes in young quail with some of these changes restored to original levels within only 1 h of refeeding. Thus, in quail, adipose tissue physiology is dynamic and influenced by short-term changes in nutritional status during the early post-hatch period.

中文翻译：

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短暂的交流：短期禁食和重新进食可导致7天大的日本鹌鹑皮下脂肪组织生理发生变化。

脂肪组织发育受多种因素影响，包括营养和遗传背景。在禽类中，最多的是鸡，尚不清楚孵化后第一周其他人工选择较少的禽类是否相似。因此，本研究的目的是确定禁食和再喂食对日本鹌鹑（Coturnix japonica）脂肪组织生理的影响。孵化后第7天，将鹌鹑随机分为喂食（对照组），禁食6h（禁食）或禁食6h，然后再喂食1h（参考）。收集血样用于血浆非酯化脂肪酸（NEFA）测定，并收集皮下脂肪组织用于基因表达分析。禁食状态下血浆NEFAs升高并在重新喂养1小时内恢复到基线，皮下脂肪组织中甘油单酯脂肪酶的表达不受进食状态的影响。与空腹相比，空腹降低了CCAAT /增强子结合蛋白αmRNA的表达，并且这种变化通过重新喂养而持续存在，而refed则降低了神经肽Y受体5 mRNA的表达。我们的结果表明，禁食可促进幼鹌鹑的脂肪分解和基因表达变化，其中一些变化仅在重新喂养1小时内即可恢复到原始水平。因此，在鹌鹑中，脂肪组织的生理是动态的，受孵化后早期营养状况的短期变化影响。与禁食相比，refref的神经肽Y受体5 mRNA降低。我们的结果表明，禁食可促进幼鹌鹑的脂肪分解和基因表达变化，其中一些变化仅在重新喂养1小时内即可恢复到原始水平。因此，在鹌鹑中，脂肪组织的生理是动态的，并受孵化后早期营养状况的短期变化影响。与禁食相比，refref的神经肽Y受体5 mRNA降低。我们的结果表明，禁食可促进幼鹌鹑的脂肪分解和基因表达变化，其中一些变化仅在重新喂养1小时内即可恢复到原始水平。因此，在鹌鹑中，脂肪组织的生理是动态的，并受孵化后早期营养状况的短期变化影响。