当前位置: 首页 > 文章 > 亚热带平原绵羊的高温应激反应 应用生态学报 1992,3 (2) 155-159
Position: Home > Articles > Effect of high ambient temperature on sheep in subtropical plains Chinese Journal of Applied Ecology 1992,3 (2) 155-159

亚热带平原绵羊的高温应激反应

作  者:
马卫东;康梦松;高红;黄光辉;周复查
单  位:
湖南华容县景港畜牧站;湖南农学院畜牧水产系
关键词:
绵羊;热应激;耐热性;亚热带;生态因子
摘  要:
对考湖杂种羊在夏季高温下的应激反应作了一些生理生化测试分析。环境温度逐渐增高时,绵羊的体温、心率、呼吸均有不同程度的增加,其中呼吸、心率增加到一定的程度后,又趋于平缓下降,呈“S”形曲线变化;当环境温度在35℃以下时,皮温高于毛丛温度,绵羊可以蒸发和非蒸发两种方式散热,环境温度接近35℃时,皮温与毛丛温度相等,绵羊只能以蒸发方式散热;高温下血清中K、Na、Cl、胆固醇的浓度显著降低(P<0.01或P<0.05),血清甲状腺激素T_3、T_4浓度显著增加(P<0.01),血清葡萄糖浓度也有所增加。
译  名:
Effect of high ambient temperature on sheep in subtropical plains
作  者:
Ma Weidong, Kang Mengsong, Gao Hong(Hunan Agricultural College, Changsha 410128), Huang Guanghui and Zhou Fuzha(Jinggang Husbandry Station of Huarong County, Hunan Province, Huarong 424215).
关键词:
Sheep, Heat stress, Heat tolerance, Subtropics, Ecological factor.
摘  要:
Some physiological and biochemical responses of Kauhu crossbred sheep under high temperature conditions were measured. The body temperature, heart rate (HR) and respiratory rate (RR) of sheep increased with ambient temperature (AT). RR and HR maximized at 29℃. Below 35℃, the skin temperature was higher than that of wool, and sheep might lose heat through evaporative and nonevaporative ways. The skin temperature was equal to wool temperature at 35℃, its heat being lost only via evaporation. Potassium, sodium, chlorine and cholesterol concentrations in serum under high temperature conditions decreased 19.96, 17.43, 1.22 and 35.51% respectively (p<0.05 or p<0.01), while triiodothyronine and thyroxine increased significantly (p<0.01) and glucose content increased also.

相似文章

计量
文章访问数: 3
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊