Table 2.
Ammonia levelaand urine spot diameter, color,band edgeccharacteristics (mean ± 1 SD) on day 1-16 after cage change in cages housing 5 male or 5 female mice
| Male Cages (n = 135) | Female Cages (n = 123) | P | |
| Ammonia | 2.7 ± 0.9 | 2.2 ± 0.9 | <0.0001d |
| Diameter (in.) | 3.0 ± 1.2 | 2.3 ± 1.1 | <0.0001d |
| Color3 | 1.9 ± 0.7 | 1.6 ± 0.7 | <0.0026d |
| Edge4 | 1.5 ± 0.5 | 1.3 ± 0.5 | <0.0058d |
a
Ammonia level codes: 1, less than 1 ppm ammonia (color of indicator disk, yellow); 2, 1–25 ppm (light green); 3, 25–50 ppm (medium green); and 4, more than 50 ppm (dark blue).
b
Color codes: 1, light brown; 2, medium brown; and 3, dark brown.
c
Edge codes: 1, diffuse; and 2, distinct.
d
Value significantly (P < 0.01) different between male and female mice.