漂浮救生装置上浮试验期间犬行为及部分生理指标的变化

Changes in the behavior and physiological data of the beagles during the test of the floating escapedevice

目的观察漂浮救生装置上浮试验期间犬的行为及部分生理指标变化，评价该装置对动物的安全性。方法采用数字表法，将6条比格犬随机分为2组，实验组和对照组各3条。将实验组置于漂浮救生装置内，在该装置上浮试验期间，通过高清数码摄像，采用Observer系统分析2组犬的行为，采用G3多参数监护仪连续监测记录2组犬的心率、心电图、血压、体温及呼吸频率。结果漂浮救生装置上浮试验期间，实验组犬的平均血压、呼吸频率、平均体温漂浮前期分别为（108±14）mmHg、（55±31）次／min、（37．9±0．1）℃，与对照犬（98±15）mmHg、（41±20）次／min、（37．5±0．4）℃比较差异有统计学意义（P〈0．05），较对照组犬要高，与实验组犬的环境变化有关；实验组犬情绪比较安定，不同阶段之间实验组犬行为存在差异但未发现挣扎、狂躁等行为。结论漂浮救生装置动物上浮试验结果表明，装置的释放、浮起和海面拖带过程对动物是安全的，实验期间未观察到该漂浮救生装置对犬有不可逆损伤。

Objective To observe changes in the behavior and physiological data of the beagles during the test of the floating escape device and also to evaluate the safety of the floating escape device. Methods Six male beagles were randomly divided into the experimental group and the control group, each consisting of 3 animals. The animals in the experimental group were put in the floating escape device. The high-definition digital video camera and the observer system were used to analyze the animal behavior. Heart rate, electrocardiogram （ECG）, blood pressure, body temperature and respiration of the animals were continuously monitored by using the G3 muhi-parameter monitoring system, during the process of the floating test. Results During the floating test, respiratory frequency, blood pressure, heart rate and temperature of the beagles in the experimental group fluctuated within normal range, ECG detected was quite similar to that of the control animals. When compared with those of the control animals, the experimental animals had higher levels of blood pressure, heart rate and respiratory frequency, which might be associated with the changed environment and strained emotion. But on the whole, the emotion of the experimental animals was stable, though there were differences in the behaviors of the experimental animals at different experimental stages, but no abnormal behaviors could be observed. Conclusions The animal test of the floating escape device indicated that the release and floating of the device as well as towing on the sea surface were safe to the animals. No serious harms to the physiology and behavior of the animals could be observed during the floating test.