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早期养策略缓解了主要的生理动力学变化,由热应激变化在肉
Ahmed Gouda1, Hanan Al-Khalaifah2, Afaf Al-Nasser2
1Department of Animal Production, National Research Center, El Buhouth St., Dokki, Giza P.O. Box 12622, Egypt.
Animals : an open access journal from MDPI
|May 25, 2024
概括
早期取消料 (FWD) 在热应激下显著改善肉的表现和生理健康. 这种营养策略增强了耐热性,免疫力和抗氧化剂状态,为在炎热的气候下可持续的家禽生产提供了有希望的解决方案.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 环境生理学环境生理学
背景情况:
- 热应激对肉生产效率和利能力产生负面影响,特别是在炎热的气候下.
- 改善肉的耐热性对于在不利的环境条件下持续表现至关重要.
- 早期取消料 (FWD) 被探索为减轻热应激效应的潜在策略.
研究的目的:
- 调查三种早期取消养制度对暴露于慢性热应激的肉的影响.
- 评估FWD对生产绩效,生理参数和肉免疫反应的影响.
主要方法:
- 240只一天大的Cobb-500被分为四组:对照组 (没有FWD) 和三个FWD组 (在特定年龄段持续24小时,12小时或8小时).
- 监测生产表现,并采集血液和肝脏样本进行生理分析.
- 评估的关键参数包括激素水平,血液代谢物,抗氧化剂标记物,免疫因素和热冲击蛋白.
主要成果:
- 与热应激下的对照组相比,FWD治疗显著改善了 brojler 生产性能和生理参数.
- FWD调节了血清荷尔蒙水平 (甲状腺升高,瘦素降低),改善了血液特征 (蛋白质,血球蛋白,血红蛋白较高;胆固醇,尿酸较低),增强了抗氧化剂状态.
- 免疫标记物 (免疫球蛋白,酶,C3,HSP70,IL-1β,IFN-γ) 在FWD组中升高,表明免疫功能改善和应激适应.
结论:
- 早期断食是慢性热应激下 brojlers 的一个有希望的非侵入性营养策略.
- FWD减轻了热应激对肉性能,免疫力和氧化还原状态的负面影响.
- 这一策略促进了生理适应,并提高了肉的耐热能力.
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