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当前位置: 首页 > 文章 > 不同环境温度对锦江牛体温调节生理反应和白细胞参数及其淋巴细胞周期的影响 畜牧与兽医 2020 (1) 32-37
Position: Home > Articles > The effect of ambient temperature on the physiological thermoregulation, leukocyte parameters and lymphocyte cell cycle of Jinjiang cattle Animal Husbandry & Veterinary Medicine 2020 (1) 32-37

不同环境温度对锦江牛体温调节生理反应和白细胞参数及其淋巴细胞周期的影响

作  者：
龚会单;韩波;邱静芸;杨食堂;颜培实
单  位：
高安裕丰农牧有限公司;南京农业大学动物科技学院
关键词：
环境温度;体温调节;白细胞;细胞周期
摘  要：
以8头7月龄、平均体重(150±10.01)kg的锦江牛为试验对象,在畜舍气温4.6～34.6℃范围内监测锦江牛体温调节生理反应、血液白细胞参数和淋巴细胞周期,以剖析锦江牛的环境适应特性。结果:(1)环境温度每升高1℃,锦江牛皮温增加0.795 6℃,环境温度大于25℃时呼吸频率快速增加,大于30℃时直肠温度升高;(2)白细胞总数、淋巴细胞总数和淋巴细胞百分比在4.8℃、9.6℃和32.6℃下显著降低(P<0.05),单核细胞数目和百分比在4.8℃、9.6℃时显著降低(P<0.05);(3)淋巴细胞G0/G1比例在4.8℃、9.6℃和32.6℃显著降低,同时S期比例和细胞增殖指数显著升高(P<0.05)。试验表明:环境温度升高,锦江牛可通过增加直肠温度、提高皮温和呼吸频率以增强潜热散热,在高温和低温下其白细胞、淋巴细胞减少,通过淋巴细胞增殖更新减弱对细胞免疫的负面影响,锦江牛的最佳生产温度区间在10～25℃内。
译  名：
The effect of ambient temperature on the physiological thermoregulation, leukocyte parameters and lymphocyte cell cycle of Jinjiang cattle
作  者：
GONG Huichan;HAN Bo;QIU Jingyun;YANG Shitang;YAN Peishi;College of Animal Science and Technology, Nanjing Agricultural University;Gao'an Yufeng Agriculture and Animal Husbandry Co., Ltd.;
关键词：
ambient temperature;;thermoregulation;;white blood cell;;cell cycle
摘  要：
In order to understand the physiological adaptation of Jinjiang cattle to their environment, eight 7-month-old cattle were chosen with similar body weight(150±10.01 kg) to measure their thermoregulation and leukocyte parameters and lymphocyte cycle at the temperatures ranging from 4.6 ℃ to 34.6 ℃. The results showed that the skin temperature of the Jinjiang cattle increased by 0.7956 ℃ for each 1 ℃ increase in the ambient temperature. When the ambient temperature was above 25 ℃, the respiration rate of the cattle increased sharply, and the rectal temperature rose to above 30 ℃. Their total numbers of leukocyte and lymphocyte, and that lymphocyte rates significantly decreased at 4.8 ℃, 9.6 ℃ and 32.6 ℃ in the environment(P<0.05), while the monocyte value and its percentage decreased at 4.8 ℃ and 9.6 ℃(P<0.05). The percentage of the G0/G1 phase cells of lymphocytes decreased at 4.8 ℃, 9.6 ℃ and 32.6 ℃(P<0.05), while the rate of the phase S cells of lymphocytes and PI significantly increased(P<0.05). In conclusion, with the rising temperature in the environment, the Jinjiang cattle experienced increase in rectal temperature, skin temperature and respiration rate so to help latent heat dissipation. Under high and low temperatures, the number of leukocyte and lymphocyte decreased, resulting in the activated lymphocyte and its proliferation, for the amelioration of the negative impact against immunity stress. The optimal temperatures for Jinjiang cattle production ranged between 10～25 ℃.

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