食封装精油可以改善生长性能,并调节热应激 brojlers 的应激基因
Mahmoud Madkour1, Mohamed Hosny2, Osama Aboelazab1
1Animal Production Department, National Research Centre, Giza 12622, Egypt.
Journal of animal science
|December 12, 2025
概括
封装的精油,肉,红枣和丁香的混合物,在热应激下显著改善肉的生长和抗氧化能力. 这种食补充剂通过调节应激反应基因来增强性能和细胞弹性.
科学领域:
- 动物科学动物科学
- 营养生物化学 营养生物化学
- 禽畜科学 禽畜科学 禽畜科学
背景情况:
- 由于热应激,家禽产业面临重大经济损失,影响生长和健康.
- 精油 (EO) 在减轻热应激方面表现有前途,但机制需要进一步阐明.
- 封装技术可以提高动物料中EO的稳定性和有效性.
研究的目的:
- 为了评估肉,西红和丁香 EO 混合物的影响,既非封装和封装,在自然夏季高温压力下的肉上.
- 研究对生长性能,抗氧化剂状态和关键应激反应基因的表达的影响.
- 为了确定减轻热应激的最佳剂量和形式 (封装与非封装).
主要方法:
- 350只雄性肉被分配到7个组:对照组和EO/封装EO (CEO) 剂量为50,100,150毫克/公斤.
- 鸟类暴露于自然的夏季热应激 (THI 30.52).
- 分析了生长性能,血清总抗氧化能力 (TAC) 和肝脏基因表达 (应激反应,抗氧化剂,亲氧化剂,营养物质运输体).
主要成果:
- 与对照组相比,100 mg/kg的CEO显著改善了体重,体重增加和料转化率.
- CEO补充剂增加了29%的血清 TAC,并调节了与压力相关的基因表达,降低了HSP70,HSP60和HSPA9.
- 抗氧化酶表达 (SOD2,GPX1,GPX4) 被降低,而亲氧化剂NOS2和GR表达减少; jejunalGLUT2被上调.
结论:
- 100毫克/公斤的封装精油 (肉,西红,丁香) 在热应激下有效提高肉的生长性能和抗氧化剂状况.
- 首席执行官补充剂通过调节热冲击蛋白和抗氧化剂/亲氧化剂通路的表达来提高细胞应激弹性.
- 封装似乎是一个可行的策略,以提高精油在减轻家禽热应激的有效性.
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