Abstract
THE question has often arisen as to whether the oviduct has any direct influence on the calcium content of the blood of the fowl. Specifically, does the activity of the shell gland or the oviduct have any influence on the observed rise in blood calcium at the onset of maturity in the pullet? The observation has been made in practice that foreign materials in the oviduct are usually calcified before they are expelled. Also in a previous paper by the above authors (in press) evidence has been presented to the effect that the ovaries are the principal mechanism for the control of blood calcium.In order to show whether the oviduct was connected in any way with the blood calcium the oviducts were entirely or partially removed from 20, 6–8 week old White Leghorn pullets 15 of which survived the operation. Five normal pullets were used for controls.The .
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