湿热环境中育成猪的体温节律研究(英文)

Study on the rhythm of thermoregulation of growing pigs housed individually within humid and warm environment

试验选用相同品种和体重的 4头育成猪 ,在适宜的环境中饲养一周后 ,将其中 2头猪置于湿热环境中 ,应用 DSI动物生理参数无线遥测系统研究了猪的体温节律性 .结果表明 :湿热环境下猪的体温和心率昼夜节律发生了明显变化 ,猪的体温最高并非出现在 16 :0 0～ 17:0 0 ,而是出现在 2 2 :0 0～ 2 3:0 0 ,且 2 4 h内体温差达 1.17℃ ;而猪的心率在 2 4 h内无昼夜差异 。

4 growing pigs with same weight and breed used were housed individually at thermoneutral environment. One week later, two of these pigs were reared individually in humid and warm environment and the effects of such environment on the rhythm of core body temperature and heart rate of pigs were studied using DSI telemetry system. Results showed that the rhythm of core body temperature and heart rate of growing pigs under humid and warm environment varied significantly: the peak of core body temperature appeared at 22:00-23:00, but not at 16:00-17:00. And the rhythm of heart rate of pigs housed in humid and warm environment showed no hourly difference, and higher heart rate was sustained in these pigs.