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评估热应激对突尼斯当地儿童生长的影响:改善干旱环境的育种策略

Ahlem Atoui^1,2, Sghaier Najari¹, Clara Diaz³

¹Laboratory of Livestock and Wildlife, Institute of Arid Regions (IRA), Medenine 4119, Tunisia.

Animals : an open access journal from MDPI

|October 16, 2024

概括

热负荷显著影响突尼斯当地孩子的体重. 立方模型准确地预测了超出热应激值的体重减轻,个体反应不同,较大的动物表现出更好的耐热性.

科学领域:

动物科学动物科学
环境生理学环境生理学
热调节热调节热调节

背景情况:

全球气温上升给畜牧业的生产力带来了挑战.
了解热负荷效应对于动物福利和农业可持续性至关重要.

研究的目的:

为了评估热负荷对突尼斯当地孩子体重的影响.
为了识别热应激值和量化体重减轻.
为了比较立方体和正方体莱根德尔多项式模型的准确性.

主要方法:

使用了24个模型,其中包括立方和二次的莱根德多项式.
分析了每日温度 (Tmin,Tmax,Tavg) 和7,14,21天的平均值.
使用偏差信息标准 (DIC) 来评估模型的合适性.

主要成果:

立方多项式模型提供了一个优越的匹配与二次式模型相比.
体重显著下降,超过了中度 (17.7 °C Tavg21) 和严重 (25.3 °C Tavg21) 的热应激值.
根据Tmin,Tmax和Tavg在14天内确定了中度和急性应激的特定热应激值.
观察到体重对热应激反应的实质性个体变异.

结论:

立方模型准确地描述了热负荷对孩子体重的影响.
热应激显著降低了孩子的体重,不同温度指标的值不同.
个体动物的特点影响热耐受性,较大的动物和那些在中等压力下耐受性较强的动物表现出更好的弹性.

关键词:

热应激是一种热应激.个体耐热度的个人耐热度.孩子的成长孩子的成长孩子的成长减肥减肥减肥减肥减肥减肥

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