Quantitation of P metabolism in the rabbit by means of 32P.
Cr2O3 was found to be very effective in correcting the daily variations in the excretion of dry matter, Ca, Mg, and P in rabbit faeces. It can shorten the length of a balance experiment by 50%. We have an idea that a considerable part (about 50%) of the total P retained is incorporated in the organism so quickly that it cannot be observed with the intravenous radioactive tracer method. The excretion of the endogenous faecal P amounted to 20 mg per day. No significant difference was found between the apparent and the actual absorption coefficient of P. The exchangeable P pool of the organism amounted to 690 mg. The experiment results should be subjected to detailed biometric evaluation.
D000818:Animals; D002118:Calcium / Q000378:metabolism; D005243:Feces / Q000032:analysis; D008274:Magnesium / Q000378:metabolism; D008722:Methods; D010758:Phosphorus / Q000097:blood / Q000378:metabolism*; D011817:Rabbits / Q000378:metabolism*
D010758:Phosphorus; D008274:Magnesium; D002118:Calcium