使用多变量特征分析对巴厘岛牛的热应激和料短缺进行歧视
Ikhsan Suhendro1, Ronny Rachman Noor2, Jakaria Jakaria2
1Research Center for Applied Zoology, National Research and Innovation Agency (BRIN), 16915, Bogor, Indonesia. ikhsan.suhendro.1@brin.go.id.
Tropical animal health and production
|June 11, 2025
概括
多变量分析有效地区分了热应激和料短缺的巴厘岛牛. 直肠温度和体重是关键指标,突出显示了联合压力因素对动物表现的影响.
科学领域:
- 动物科学动物科学
- 环境生理学环境生理学
- 统计建模 统计建模
背景情况:
- 动物生产系统面临着环境压力因素的重大挑战,如热应激和料短缺.
- 这些同时存在的压力因素对牛的生产,生殖和健康产生了复杂的负面影响.
研究的目的:
- 评估多变量统计分析在区分料稀缺和热应激影响方面的有效性.
- 验证使用巴厘岛牛的生理和身体特征作为这些压力因素的诊断标记.
主要方法:
- 在三个管理系统下,从83只巴厘岛牛身上收集了生理和身体特征:热应激限制料 (HSRF),热应激料 (HSWF) 和温度正常料 (TNWF).
- 主要组件分析 (PCA) 确定了有影响力的特征,而线性区分分析 (LDA) 和正规区分分析 (CDA) 用于分类.
- 集群分析验证了与每个管理系统相关的特征分组.
主要成果:
- 多变量分析成功地根据管理条件区分了牛.
- 结直肠温度 (TR) 和体重 (BW) 被确定为最有影响力的特征,使牛在压力下有所区分.
- 热应激和限制料 (HSRF) 的牛表现出显著的负面影响,而单一的压力因素 (HSWF) 则更易于管理.
结论:
- 多变量统计方法在评估不同环境条件下牛的适应性和表现方面是有效的.
- 确定了直肠温度和体重等关键特征,可以改进管理策略,以优化牛的弹性.
- 该研究证实了这些方法在区分牛对动物生产中不同和联合压力因素的反应方面具有实用性.
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