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首页> 外文期刊>Tropical Animal Health and Production >Evaluation of thermal comfort, physiological, hematological, and seminal features of buffalo bulls in an artificial insemination station in a tropical environment
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Evaluation of thermal comfort, physiological, hematological, and seminal features of buffalo bulls in an artificial insemination station in a tropical environment

机译：在热带环境中的人工授精站中对水牛公牛的热舒适性，生理，血液学和生殖特性进行评估

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This study aimed to assess the variation over time in thermal comfort indices and the behavior of physiological parameters related to thermolysis, blood parameters, and semen in natura of buffalo bulls reared in tropical climate. The study was carried out in an artificial insemination station under a humid tropical climate (Afi according to Koppen). Ten water buffalo bulls (Bubalus bubalis) were used during the 5 months (April to August) of study. The environmental Temperature Humidity Index (THId) and the pen microclimate Temperature Humidity Index (THIp) were calculated. Every 25 days, respiratory rate (RR), heart rate (HR), rectal temperature (RT), and Benezra's thermal comfort index (BTCI) were assessed in the morning and in the afternoon. A blood assay was performed every month, while semen was collected weekly. THIp did not vary over the months (P > 0.05) and was higher in the afternoon than in the morning (77.7 +/- 2.6 versus 81.8 +/- 2.1, P 0.05). RR, HR, and BTCI significantly increased over the months and were different between the periods of the day (P > 0.05) but within the physiological limits. RT varied between the periods of the day and decreased over the months, being the lowest in August (37.8 +/- 0.7 A degrees C), time-impacted hematocrit, mean corpuscular volume, hemoglobin levels, and spermatic gross motility and vigor (P 0.05). Thus, buffalo bulls reared under a humid tropical climate may have variations in thermal comfort during the hotter periods but are able to efficiently activate thermoregulatory mechanisms and maintain homeothermy, hence preserving their physiological and seminal parameters at normal levels.
机译：这项研究旨在评估热带气候下饲养的水牛公牛的自然舒适度指数随时间的变化以及与热分解，血液参数和精液有关的生理参数的行为。这项研究是在潮湿的热带气候下的人工授精站进行的（根据Koppen的说法是Afi）。在研究的5个月（4月至8月）期间，使用了10只水牛公牛（Bubalus bubalis）。计算了环境温度湿度指数（THId）和笔小气候温度湿度指数（THIp）。每隔25天，在早晨和下午评估呼吸频率（RR），心率（HR），直肠温度（RT）和贝内兹拉的热舒适指数（BTCI）。每月进行一次血液测定，每周收集一次精液。 THIp在几个月内没有变化（P> 0.05），并且下午高于早上（77.7 +/- 2.6与81.8 +/- 2.1，P <0.05）。 RR，HR和BTCI在过去的几个月中显着增加，并且在一天的不同时段之间存在差异（P> 0.05），但在生理范围内。 RT在一天中的各个时间段之间有所不同，并且在几个月中有所下降，在八月最低（37.8 +/- 0.7 A摄氏度），受时间影响的血细胞比容，平均红细胞体积，血红蛋白水平以及精子总运动力和活力（P <0.05）。因此，在潮湿的热带气候下饲养的水牛公牛在较热的时期可能会有热舒适感的变化，但能够有效激活体温调节机制并保持恒温，因此将它们的生理和精子参数保持在正常水平。

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