在霍尔斯坦牛的阴道温度建模和通过cophenetic相关系数进行集群分析
Marcos Vinícius da Silva1, Héliton Pandorfi1, Maria Simone Mendes Peixoto2
1Department of Agricultural Engineering, Federal Rural University of Pernambuco, Dom Manoel de Medeiros Avenue, SN, Dois Irmãos, Recife, Pernambuco, 52171-900, Brazil.
Journal of thermal biology
|June 16, 2023
概括
这项研究开发了模型,使用环境数据预测霍尔斯坦牛的阴道温度 (Tv). 这些模型有助于评估在堆肥棚中安置的奶牛的热舒适度和压力.
科学领域:
- 动物科学动物科学
- 环境科学 环境科学
- 兽医医学 兽医医学 兽医医学
背景情况:
- 在堆肥棚中养的奶牛容易受到热应激.
- 准确监测动物福利需要了解对环境条件的生理反应.
- 阴道温度 (Tv) 是牛热应激的一个关键指标.
研究的目的:
- 在荷尔斯坦牛中建立阴道温度 (Tv) 的预测模型.
- 用环境预测因素和热舒适度指数来描述热舒适度和压力.
- 通过集群分析和共相关系数 (CCC) 验证模型.
主要方法:
- 收集的微气象数据:空气温度 (Tair),相对湿度 (RH),黑球温度 (BGT),黑球温度和湿度指数 (BGHI),以及露点温度 (TDP).
- 使用阴道内传感器和数据记录器记录了八只霍尔斯坦牛的阴道温度 (Tv).
- 分析数据使用描述性统计,层次聚合集群分析 (CA) 和多重回归分析.
主要成果:
- 轮班间的阴道温度 (Tv) 变化为0.28°C表明动物舒适状态的变化.
- 温度高于39°C的TV被确定为动物压力的标志.
- Tv与BGT,Tair,TDP和RH有很强的相关性,突出显示了非生物因素的影响.
结论:
- 成功建立了经验模型来估计奶牛的阴道温度 (Tv).
- 推1型适用于特定的露点温度 (TDP) 和相对湿度 (RH) 范围,而2型适用于更高的空气温度 (Tair).
- 这些回归模型为在堆肥棚系统中描述热舒适度提供了一个有希望的方法.
相关概念视频
01:27Assessing Body Temperature - Rectal
4.9K
Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
4.9K
01:19Assessing Body Temperature - Temporal Artery
598
Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.
Step 3: Assess the patient's...
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.
Step 3: Assess the patient's...
598
01:12Coefficient of Correlation
6.2K
The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear association between the independent variable x and the dependent variable y.
If you suspect a linear relationship between x and y, then r can measure how strong the linear relationship is.
What the VALUE of r tells us:
The value of r is always between –1 and +1: –1 ≤ r ≤ 1.
The size of the correlation r indicates the...
If you suspect a linear relationship between x and y, then r can measure how strong the linear relationship is.
What the VALUE of r tells us:
The value of r is always between –1 and +1: –1 ≤ r ≤ 1.
The size of the correlation r indicates the...
6.2K
01:23Correlation of Experimental Data
256
Dimensional analysis simplifies complex physical problems and guides experimental investigations, but it does not provide complete solutions. It identifies the dimensionless groups that influence a phenomenon, but experimental data is needed to establish the specific relationships and validate theoretical predictions.
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
256
01:11Calculating and Interpreting the Linear Correlation Coefficient
6.0K
The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear association between the independent variable, x, and the dependent variable, y. Hence, it is also known as the Pearson product-moment correlation coefficient. It can be calculated using the following equation:
6.0K
01:14Assessing Body Temperature - Axilla
622
Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
622