Abstract

The objective of the survey is to assess the regional variation in climate change and the associated level of animals' susceptibility to heat-stress. The air temperature and humidity datasets measured for 1996–2015 at meteorological station nos. 27 595, 28 506, and 28 704 in the Republic of Tatarstan are used. The temperature-humidity index (THI) is estimated according to J. West (1994). The levels of heat stress are classified according to LPHSI (1990). The results show a relative uniformity of air temperature distribution in spring and autumn seasons (5.30 ± 0.21°C and 5.36 ± 0.18°C, respectively). The average 1996 winter temperature tended to be 0.41°C higher than that in winter 2010. Winter 2015 appeared warmest; the average temperature comprised –7.13°C. The average 1996 summer temperature comprised 18.48°C, which was 0.32°C lower than the long-term average. The average summer temperature for 2015 was 0.50°C lower than the long-term average. It was ascertained based on the calculated THI values that the cattle were free from heat stress in 64.02% of cases in the summer season, while the other animals were susceptible to heat stress at different levels in 35.98% of cases. In addition, some specimens were most susceptible to heat stress (24.62%). It is indicated that the temperature factor has a greater influence on the THI values (r = 0.995 (p < 0.01) and R2 = 0.9899).

中文翻译：

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基于气象因素分析的牛热应激评估

摘要

这项调查的目的是评估气候变化的区域变化以及相关的动物对热应激的敏感性水平。在1996-2015年气象站上测量的空气温度和湿度数据集。使用of斯坦共和国的27595、28506和28704。根据J. West（1994）估算温度-湿度指数（THI）。热应力水平根据LPHSI（1990）进行分类。结果表明，春季和秋季的气温分布相对均匀（分别为5.30±0.21°C和5.36±0.18°C）。1996年冬季的平均温度往往比2010年冬季的平均温度高0.41°C。2015年的冬季似乎最温暖。平均温度为–7.13°C。1996年夏季平均温度为18.48°C，为0。比长期平均值低32°C。2015年夏季平均温度比长期平均温度低0.50°C。根据计算出的THI值可以确定，在夏季，有64.02％的牛没有热应激，而其他动物在35.98％的情况下都受到不同程度的热应激。此外，一些标本对热应力最敏感（24.62％）。表明温度因子对THI值的影响更大（此外，一些标本对热应力最敏感（24.62％）。表明温度因子对THI值的影响更大（此外，一些标本对热应力最敏感（24.62％）。表明温度因子对THI值的影响更大（r = 0.995（p <0.01）和R 2 = 0.9899）。