Abstract
Two systems are described for the collection of 24 h urine samples from the common marmoset (Callithrix jacchus).
Using 84 adult animals, 1210 24-h samples were collected. Mean urinary excretion was 14·4±7·5 ml/24h (n=1210, mean±SD). No differences were observed between sexes (for 52 females, 24 h volume=15·1±8·0 ml; for 32 males, 24 h volume=12·5±6·0 ml). No significant differences were observed between pregnant and non-pregnant females with respect to 24 h urine volume, and bilateral gonadectomy did not influence subsequent urinary excretion in either sex.
For 161 pairs of observations, the intake of drinking water (11·7±10·2 ml/24 h) and the volume of urine excreted (12·6±7·1 ml/24 h) showed a positive correlation r=0·406 d.f. 159, P<0·001: y=0·558x+4·247).