Hostname: page-component-cb9f654ff-5kfdg Total loading time: 0 Render date: 2025-08-22T18:17:21.221Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on the effects of exogenous progesterone and oestrone during early gestation on farrowing performance in gilts

Published online by Cambridge University Press:  02 September 2010

J. W. Knight ,
D. L. Dalton  and
K. L. Bryant
J. W. Knight
Affiliation:
Department of Animal Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
D. L. Dalton
Affiliation:
Department of Animal Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
K. L. Bryant
Affiliation:
Department of Animal Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
Get access

Abstract

Administration of exogenous progesterone (0-55 mg/kg live weight) and oestrone (0-275μg/kg live weight) during various discrete intervals between days 4 and 30 of gestation elicited variable results depending upon the time and duration of administration. Administration of the combined steroids early in gestation (days 4 to 20, trial 1; days 4 to 12, trial 2) tended to affect farrowing performance adversely. In general, advantageous effects on farrowing performance occurred when treatment with exogenous progesterone and oestrone was initiated at day 12 or later of gestation.

Information

Type
Research Article
Information
Animal Production , Volume 37 , Issue 1 , August 1983 , pp. 141 - 144
Copyright
Copyright © British Society of Animal Science 1983

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

Barr, A. J., Goodnight, J. H., Sall, J. P. and Helwig, J. T. 1979. A User's Guide to Statistical Analysis System (SAS). North Carolina State Univ., Raleigh.Google Scholar
Dalton, D. L. and Knight, J. W. 1983. Effects of exogenous progesterone and estrone on conceptus development in swine. J. Anim. Sci. 56: (No. 5).CrossRefGoogle ScholarPubMed
Day, B. N., Anderson, L. L., Emmirson, M. A., Hazll, L. N. and Melampy, R. M. 1959. Effect of estrogen and progesterone on early embryonic mortality in ovariectomized gilts. J. Anim. Sci. 18: 607–613.CrossRefGoogle Scholar
Day, B. N., Romack, F. E. and Lasley, J. F. 1963. Influence of progesterone-estrogen implants on early embryonic mortality in swine. J. Anim. Sci. 22: 637–639.CrossRefGoogle Scholar
Haines, C. E., Warnk K, A. C. and Wallace, H. D. 1958. The effect of exogenous progesterone and level of feeding on prenatal survival in gilts. J. Anim. Sci. 17: 879–885.CrossRefGoogle Scholar
Knight, J. W., Bazfr, F. W. and Wallace, H. D. 1973. Hormonal regulation of porcine uterine protein secretion. J. Anim. Sci. 36: 546–553.CrossRefGoogle ScholarPubMed
Knight, J. W., Bazer, F. W., Wallace, H. D. and Wilcox, C. J. 1974. Dose-response relationships between exogenous progesterone and estradiol and porcine uterine protein secretions. J. Anim. Sci. 39: 747–751.CrossRefGoogle ScholarPubMed
McGovern, P. T., Morcom, C. B., De Sa, W. F. and Dukelow, W. R. 1981. Chorionic surface area in conceptuses from sows treated with progesterone and oestrogen during early pregnancy. J. Reprod. Fen. 61: 439–442.CrossRefGoogle ScholarPubMed
Reddy, V. B., Mayer, D. T. and Lasley, J. F. 1958. Hormonal modification of the intra uterine environment in swine and its effect on embryonic viability. Res. Bull. Mo. agr. Exp. Stn, No. 667, pp. 5–31.Google Scholar
Sammelwitz, P. H., Dziuk, P. J. and Nalbandov, A. V. 1956. Effects of progesterone on embryonal mortality of rats and swine. J. Anim. Sci. 15: 1211–1212 (Abstr.).Google Scholar
Snedecor, G. W. and Cochran, W. G. 1967. Statistical Methods. 6th ed. Iowa State University Press, Ames.Google Scholar
Spies, H. G., Zimmerman, D. R., Self, H. L. and Casica, L. E. 1959. The effect of exogenous progesterone on formation and maintenance of the corpora lutea and on early embryo survival in pregnant swine. J. Anim. Sci. 18:163–172.CrossRefGoogle Scholar
Wildt, D. E., Culver, A. A., Morcom, C. B. and Dukelow, W. R. 1976. Effect of administration of progesterone and oestrogen on litter size in pigs. J. Reprod. Fert. 48: 209–211.CrossRefGoogle ScholarPubMed