Alterations in Uterine Contractility During the Oviposition Cycle in Domestic Hens

N. Saito, T. I. Koike

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16 Citations (Scopus)


The potencies of several neurohypophysial hormones were examined at different times during the oviposition cycle in an in vitro fowl oxvtocic assay. Uterine tissues were removed 2 h before (—2h-OP), immediately after (Oh-OP) and 5 h after (+5h-OP) spontaneous oviposition. In addition, uterine tissue was removed immediately after oviposition was induced, by administering prostaglandin E2 2 h before an expected oviposition (Induced-OP). The rank order of oxytocic potencies for the peptides was arginine vasotocin=vasopressin>oxytocin>mesotocin. The sensitivity of the uterus to the hormones was Oh-OP = Induced-OP> — 2h-OP= + 5-OP. These results suggest that uterine sensitivity to neurohypophysial hormones changes during the oviposition cycle in domestic fowls.

Original languageEnglish
Pages (from-to)671-676
Number of pages6
JournalBritish poultry science
Issue number3
Publication statusPublished - Jul 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology


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