相关实验视频
Updated: Jun 15, 2025
10:07
Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds
Published on: November 6, 2015
13.4K
热应激对黄色羽毛 brojlers 的食偏好的影响及其可能的机制
Xiajie Feng1, Ziyuan Ye1, Kailai Xie1
1Guangdong Provincial Key Laboratory of Animal Nutrition Control, South China Agricultural University, Guangzhou, Guangdong, 510642, China; National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
Journal of thermal biology
|August 24, 2024
概括
热应激降低了黄羽肉对Tenebrio molitor的偏好,增加了恐惧和皮质. 机制涉及多巴胺和MAO-B的变化,有不同的基于性别的途径影响养行为.
科学领域:
- 动物科学动物科学
- 神经科学是一个神经科学.
- 环境生理学环境生理学
背景情况:
- 热应激严重影响动物养,尤其是在夏季.
- 了解它对 brojler 养偏好和潜在机制的影响对于动物福利和生产率至关重要.
研究的目的:
- 调查热应激对黄色羽毛 brojlers的食偏好对Tenebrio molitor的影响.
- 阐明神经生物学机制,包括神经递质和激素通路,调解这些影响,考虑潜在的性别差异.
主要方法:
- 肉暴露在35°C的环境温度下.
- 分析了食偏好,恐惧反应,血清皮质和中枢神经系统基因表达 (多巴胺,MAO-B,压力激素受体,胰岛素信号通路组件).
- 进行了针对性别的具体分析.
主要成果:
- 热应激显著降低了Tenebrio molitor的偏好,增加了恐惧反应和血清皮质.
- 中枢神经系统的变化包括多巴胺的减少和MAO-BmRNA在核 (NAc) 和腹膜区域 (VTA) 的增加.
- 雌性肉在VTA/NAc中显示压力激素受体mRNA增加,而雄性在VTA中显示胰岛素和GLP-1信号通路激活增加.
结论:
- 热应激抑制黄色羽毛肉的享乐性养行为,具有显著的性别特异的神经生物学机制.
- 胰岛素信号通路对雄性肉来说似乎至关重要,而中脑中的压力激素受体对雌性来说至关重要.
相关概念视频
02:45Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
01:28Factors Affecting Body Temperature
4.0K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.0K