Abstract
WE have been able to induce fertile oestrus in anoestrous Romney ewes by placing a sponge impregnated with progestagen* in the vagina and injecting a follicle stimulating dose of 1,000 I.U. of pregnant mare's serum (PMS) on the day of removal of the sponge1. There was, however, no significant increase in the percentage of multiple births with this treatment.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Roberts, E. M., and Edgar, D. G., J. Reprod. and Fertil. (in the press).
Edgar, D. G., and Ronaldson, J. W., J. Endocrinol., 16, 378 (1957).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
ROBERTS, E., EDGAR, D. Timing of Injection of Pregnant Mare's Serum for the Anoestrous Breeding of Ewes. Nature 212, 1048 (1966). https://doi.org/10.1038/2121048a0
Issue date:
DOI: https://doi.org/10.1038/2121048a0
