Published online by Cambridge University Press: 27 March 2009
The available data on calcium, phosphorus and carbonate balance experiments with laying and non-laying birds have been collected and condensed. From this condensed data the following relationships have been derived:
(1) Calcium excretion is a function of calcium intake.
(2) Phosphorus excretion is a function of phosphorus intake.
(3) Carbonate excretion is a function of carbonate intake.
(4) Carbonate/calcium ratio of the excreta is a function of carbonate/calcium ratio of the intake.
(5) Calcium/phosphorus ratio of the excreta is a function of calcium/phosphorus ratio of the intake.