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原产羊的热应力指数.
Nágela Maria Henrique Mascarenhas1, Dermeval Araújo Furtado1, Vinicius de França Carvalho Fonsêca2
1Postgraduate Program in Agricultural Engineering, Department of Agricultural Engineering, Federal University of Campina Grande (UFCG), Rua Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil.
Journal of thermal biology
|June 23, 2023
概括
研究人员使用环境和生理数据为绵羊开发了一种新的热应力指数 (TSI). 这个索引准确地反映了绵羊的羊群.
科学领域:
- 动物科学动物科学
- 环境生理学环境生理学
- 农业工程 农业工程
背景情况:
- 热应激显著影响绵羊的生产力和福利.
- 现有的热舒适度指数可能无法完全捕捉绵羊的特定反应.
- 准确评估热应激对于有效的牲畜管理至关重要.
研究的目的:
- 为羊群开发一种新的热应力指数 (TSI).
- 根据现有的热舒适度指数验证拟议的 TSI.
- 确定最适合育种者指导管理决策的指数.
主要方法:
- 在不同条件下的气候室内从绵羊中收集生理和环境数据.
- 利用主要成分分析来巩固生理变量.
- 采用多重回归分析来推导 TSI 方程.
主要成果:
- 开发了羊 (TSI) 的热应力指数方程:TSI = 24.153 - (0.0523*AT) + (0.746*BGT) + (4.104*Vp).
- 实现了STI的0.668的确定系数 (R2).
- 观察到高相关值,表明了 TSI 在反映动物反应方面的效率.
结论:
- 开发的 TSI 在评估羊的热应激方面表现出高效率.
- 该 TSI 为绵羊养殖者提供了一个有价值的工具,以优化管理策略.
- 该指数有助于减轻热应激对绵羊健康和生产力的负面影响.
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