Figure 11.

A rat with a decreased general health condition was identified due to locomotion data but not by automated body weight tracking. Rat 45 was noticed during health scoring because of postsurgical lameness. (A) Body weight gain during the first 6 d after surgical intervention as measured by the automated weighing stations. †, Unpaired t test: t = 3.31, P = 0.0018. (B) Total detections on day 6 (1500 to 0700) after joint instability surgery. Each symbol represents a single rat. §, Unpaired t test: t = 6.501, P < 0.001. (C) Body weight gain compared with spontaneous motion activity within the operated group. The dotted line indicates the cut-off value (that is, 2 SD below the mean). Of note, rat 45 is below the threshold for locomotion activity but not for weight gain.