The BP and H.R were measured by tail cuff method 2 hours after stress respectively 1 day before and on the 1st, 3rd, 6th, 9th, 12th, 15th day of the stress. Their behavior was also observed.

• 分别在应激前1天及应激第1、3、6、9、12、15天的应激后2小时用尾套法测量血压、心率，并观察其行为变化；