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适当的冷刺激会改变能量分布,以提高肉的抗压能力
Rixin Gong1, Lu Xing1, Jingwen Yin1
1College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
Journal of animal science
|June 6, 2023
概括
间歇性轻度寒冷刺激 (IMCS) 改善了 brojler 肝脏的能量代谢和抗压能力. 这种适应有助于肉应对急性寒冷压力 (ACS),并保持稳定的能量水平.
科学领域:
- 动物科学动物科学
- 身体生理学 身体生理学
- 代谢学 代谢学 代谢学
背景情况:
- 寒冷的环境会对肉的健康和生产力产生负面影响.
- 耐压力和能量代谢对于家禽在低于最佳的温度下生存至关重要.
- 间歇性轻度寒冷刺激 (IMCS) 是一种增强肉弹性的一种潜在策略.
研究的目的:
- 为了研究IMCS对肉肝能量代谢的影响.
- 评估IMCS对肉对急性寒冷应激反应 (ACS) 的影响.
- 为了确定关键的基因和途径,涉及到适应冷的适应性反应.
主要方法:
- 96只雄性罗斯-308肉被分为控制 (CC) 和IMCS (H5) 组.
- 从第15天到第35天,IMCS涉及将肉暴露在3°C低的温度下,每隔一天5小时,从第15天到第35天.
- 对肝脏组织进行了转录组测序和基因表达分析.
- 肉在10°C下经历了6小时和12小时的急性寒冷压力 (ACS).
主要成果:
- IMCS对生产表现产生了积极的影响.
- 鉴定了327个差异表达基因 (DEGs),富含脂肪酸和酸盐代谢途径.
- 参与脂肪酸代谢 (ACAA1,ACAT2,ACSL1,CPT1A) 和酸盐代谢 (LDHB,PCK1) 的特定基因在IMCS后表达变化.
- 接受IMCS治疗的肉在6小时ACS后表现出增加的热冲击蛋白 (HSP) 表达,但在12小时ACS后降低了HSP水平,这表明适应性有所改善.
结论:
- IMCS 增强肉肝中的能量代谢和抗压能力.
- IMCS有助于肉适应寒冷,减轻急性寒冷压力的负面影响.
- 这项研究确定了关键的代谢途径和基因,这些基因与肉的寒冷适应有关.
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