Abstract
Summary
Removal of the ruptured ovarian follicle or of this follicle together with the oldest maturing follicle of the hen at the time when the egg taking its origin from the ruptured follicle was in the oviduct almost invariably resulted in the holding of the egg beyond the expected time of lay. Most eggs were held from 1 to 7 days. Removal of other parts of the ovary at comparable times, without simultaneously removing the most recently ruptured follicle, practically never resulted in comparable holding of the oviducal egg. The ruptured follicle of the hen is believed therefore to be an important factor in determining the time of lay of the egg formed from its previously contained ovum.
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