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THE INSTITUTIONAL ANIMAL CARE AND USE COMMITTEE (IACUC)

NORMATIVE VALUES: THE RAT

Item Normal Value Source
Daily food consumption 5 g/100 g James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Diet peculiarities None  
Daily water consumption 8 - 11 ml/100 g James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Dietary protein 12% James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Daily urinary output 5.5 ml/100 g James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Life span 2.5 - 3 yr Baker et al.
Weight, adult male 300 - 400 g Baker et al.
Weight, adult female 250 - 300 g Baker et al.
Birth weight 5 - 6 g Baker et al.
Breeding age, female 50 ± 10 days Baker et al.
Breeding age, male 50 ± 10 days Baker et al.
Estrous cycle 5 days, polyestrous Baker et al.
Gestation 21 - 23 days Baker et al.
Weaning age 21 days, 40 - 50 g Baker et al.
Begin dry food 12 days Baker et al.
Litter size 8 - 14 Baker et al.
Time to remate Postpartum Baker et al.
Breeding life, female 1 yr James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Breeding life, male 1 yr James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Mating ratio Pairs; 1 male — 3 - 4 females James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Chromosome number 42 James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Rectal temperature 37.5° C Baker et al.
Respiration rate 85 breaths/min James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Heart rate 300 - 500 beats/min James G. Fox, Bennett J. Cohen, and Franklin M. Loew, Eds.: Laboratory Animal Medicine, Academic Press, 1984.
Blood volume 64 ml/kg, 6 - 7% body wt Baker et al.
Maximum safe bleed 5.5 ml/kg Baker et al.
Red blood cells 7.2 - 9.6 x 106/mL Baker et al.
Hemoglobin 15.6 g/dl Baker et al.
Packed cell volume 46% Baker et al.
Platelets 12.4 x 105/mL Baker et al.
White blood cells 14 x 103/mL Baker et al.
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Page updated: September 16, 2004