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长24小时的每日照明周期改善了产卵期晚期母的蛋质量

Xuelu Liu¹, Lei Shi¹, Bofei Su¹

¹College of Animal Science and Technology, Hebei Agricultural University, Baoding Hebei 071001, PR China.

Poultry science

|March 5, 2025

概括

长达24小时的光周期改善了产卵的蛋强度和厚度,而不会影响它们的性能. 暴露于光线的这种变化改变了与骨代谢相关的生物节奏和基因表达,提高了蛋的质量.

科学领域:

动物科学动物科学
时间生物学时间生物学
分子生物学分子生物学

背景情况:

在卵生产的后期阶段,蛋质量下降.
长期的 ahemeral 光周期可能会改善蛋质量,但机制尚未完全理解.

研究的目的:

为了研究长达24小时的早晨光周期改善晚期产卵母蛋质量的机制.
为了确定参与骨代谢的特定基因,这些基因对改变的光周期做出反应.

主要方法:

两组260只Hy-Line棕色产卵母 (74周大) 接受了标准的24小时光周期 (16L:8D) 或长24小时夜间光周期 (28h, 16L:12D) 在12周内.
测量了蛋的强度和厚度.
分析了血清中的1,25(OH) 2D3,ALP,PTH,PCT和OT的水平.
进行了转录组测序来分析基因表达模式,重点关注与骨代谢相关的基因 (CTNNB1,BMPR2,BMP7,PDIA3).

主要成果:

长达24小时的夜间照明周期并没有影响产卵性能,但显著提高了蛋的强度和厚度.
血清中的1,25(OH) 2D3和ALP水平显示出可比变化,而PTH,PCT和OT水平在不同组之间有所不同.
转录组分析揭示了889个基因的节奏表达,大多数基因在长光周期组中显示相向进步.
确定了与骨代谢相关的四个关键基因 (CTNNB1,BMPR2,BMP7,PDIA3),其特定的表达模式与蛋形成和光循环治疗相关.

结论:

改变光周期会影响产母的生物节奏.
基因CTNNB1,BMPR2,BMP7和PDIA3对长达24小时的夜间光周期有特别的反应.
这些已识别的基因可能在经过修改的光线条件下,在观察到的卵质量的改善中发挥作用.

关键词:

肉肉肉肉蛋质量优质的蛋质量.晚期的产卵期晚期的产卵期灯光循环的光线周期

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