鶏の卵殼形成に関する生理学的研究,特に卵殼物質の分泌開始機構について

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書誌事項

タイトル別名
  • A Physiological Study of Egg Shell Formation in the Domestic Fowl with Special Reference to the Initiation of Secreting Egg Shell Material
  • ニワトリ ノ ランカク ケイセイ ニ カンスル セイリガクテキ ケンキュウ ト

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抄録

The insertion of an artificial yolk (A. Y.) into the oviduct and the prevention of oviposition by a surgical means or by injection of progesterone were performed to investigate the initiation of secreting egg shell material in the uterus. The insertion of A. Y. into the oviduct of intact hens near the time of ovulation resulted in a normal deposition of shell around an A. Y., while the majority of A. Y. s inserted after lay of a terminal egg of the clutch were expelled prematurely. Premature lay was also observed without exception when an A. Y. was inserted into an emptied oviduct several hours after ovulation. The prevention of such a premature lay by removal of the ovarian follicles led to a deposition of shell around an A. Y. No additional calcification took place when the egg was forced to stay in the uterus for about 1 day or more beyond a normal period unless the ovum ovulated next had entered the oviduct during the prolonged period of stay of the preceding egg. It may be suggested that the stimulation of the oviduct cephalic to the uterus is necessary for initiating the secretion of shell material and that the ovulation system is associated with a regulatory mechanism by which the egg is held in the uterus until a completion of shell formation.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 47 (6), 385-392, 1976

    公益社団法人 日本畜産学会

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