Table 4.2.
ADULT | |
Weight | |
Male | 300–500 g |
Female | 250–300 g |
Life span | 2.5–3 years |
Body temperature | 37.5°C |
Basal metabolism rate (400-g rat) | 35 kcal/24 h |
Chromosome number (diploid) | 42 |
Puberty | 50 ± 10 days |
Gestation | 21–23 days |
Litter size | 8–14 |
Birth weight | 5–6 g |
Eyes open | 10–12 days |
Weaning | 21 days |
Food consumption/24 h | 5 g/100 g body weight |
Water consumption/24 h | 8–11 ml/100 g body weight |
CARDIOVASCULAR | |
Arterial blood pressure | |
Mean systolic | 116 mmHg |
Mean diastolic | 90 mmHg |
Heart rate | 300–500 beats/min |
Cardiac output | 50 ml/min |
Blood volume | 6 ml/100 g body weight |
RESPIRATORY | |
Respirations/min | 85 |
Tidal volume | 1.5 ml |
Alveolar surface area (400 g rat) | 7.5 m2 |
RENAL | |
Urine volume/24 h | 5.5 ml/100 g body weight |
Na+ excretion/24 h | 1.63 mEq/100 g body weight |
K+ excretion/24 h | 0.83 mEq/100 g body weight |
Urine osmolarity | 1659 mOsm/kg of H2O |
Urine pH | 7.3–8.5 |
Urine specific gravity | 1.04–1.07 |
Data from Baker, 1979, Bivin et al., 1979.