Abstract
AbstractIn experiments with growing pigs highly significant correlations between body weight and urinary creatinine (r=0.98) or creatine (r=0.95) excretion, were found. Furthermore, creatine made up of 20‐25% total urinary creatinine + creatine excretion. Creatinine excreted (expressed as mg kg−1 body weight) was significantly (P< 0.001) higher in heavier pigs (approx. 75 kg) compared to pigs at 25 kg and urinary creatinine as a percentage of total urinary N‐excretion was significantly (P< 0.001) lower for pigs of 25 kg than for pigs of 53 and 75 kg, respectively. There was a significant positive correlation (P< 0.001) between N‐balance and creatine excretion in 25 kg pigs whereas the opposite was the case for 75 kg pigs.
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