热应激的挑战:洛曼棕色的肠道培养细菌
A Pepoyan1, M Mikayelyan2, H Grigoryan2
1Division of food safety and biotechnology, Armenian National Agrarian University, Teryan 74, 0009 Yerevan, Armenia; International Association for Human and Animals Health Improvement, Yerevan, Armenia.
Research in veterinary science
|April 14, 2024
概括
热应激显著影响肠细菌,减少肠球菌超过1万倍,并使热冲击蛋白70 (HSP70) 水平翻一番. 这些发现对于在热应激事件期间管理家禽健康至关重要.
科学领域:
- 禽畜科学 禽畜科学 禽畜科学
- 动物微生物学动物微生物学
- 环境压力生理学生理学
背景情况:
- 热应激是家禽生产中的一个重大环境挑战.
- 了解其对肠道微生物群和压力标志物的影响对于动物福利和生产力至关重要.
研究的目的:
- 为了研究中度热应激 (35-38°C) 对肠道细菌 (乳酸菌,菌,大肠杆菌) 和洛曼棕色的热冲击蛋白70 (HSP70) 表达的影响.
- 探索转移素和脑质素基因型对这些反应的影响.
主要方法:
- 三十只洛曼棕色被暴露在8小时的热应激 (37°C,75-80%RH).
- 测量了肠道细菌群和血液HSP70水平.
- 被基因定型为血转激素 (TfAB,TfBC) 和血红 (CpAB,CpCC,CpCD) 多态.
主要成果:
- 热应激在肠道微生物群中显著减少了至少1万倍的可培养肠球菌.
- 热应激几乎使血液中的HSP70水平翻了一番.
- 观察到的肠球菌种群的变化独立于研究的特定转移素和血清胺基因型.
结论:
- 适度的热应激严重改变了的肠道微生物群组成,特别影响了肠球菌种群.
- 升高的HSP70水平表明显著的生理应激反应.
- 研究结果强调需要有效的策略来减轻热应激对家禽肠道健康的影响.
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