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Progesterone Secretion in Ewes

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Abstract

PROGESTERONE secretion during the œstrous cycle of ewes has been measured by means of a chemical assay, with a limit of sensitivity of 0.1 µgm. per ml. of blood1. The breeding behaviour of Romney ewes was followed by means of raddled teasers. In fifty-one of these ewes, assays were carried out on blood samples obtained by laparotomy from the ovarian vein draining the active ovary. The results were analysed for an average œstrous cycle of seventeen days, commencing from the day of onset of œstrus.

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References

  1. Edgar, D. G., Biochem. J., 54, 50 (1953).

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Authors and Affiliations

  1. Ruakura Animal Research Station, Department of Agriculture, Hamilton, New Zealand

    D. G. EDGAR

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  1. D. G. EDGAR
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EDGAR, D. Progesterone Secretion in Ewes. Nature 173, 639–640 (1954). https://doi.org/10.1038/173639a0

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  • DOI: https://doi.org/10.1038/173639a0

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