Journal of Equine Veterinary Science
Volume 28, Issue 4 , Pages 232-237 , April 2008

Prolactin and Gonadotropin Responses in Geldings to Injections of Estradiol Benzoate in Oil, Estradiol Benzoate in Biodegradable Microspheres, and Estradiol Cypionate

  • D.L. Thompson Jr., PhD

      Affiliations

    • School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA
    • Corresponding Author InformationReprint requests: D.L. Thompson, Jr., PhD, School of Animal Sciences, Louisiana State University, Baton Rouge, LA 70803.
    • ,
  • P.B. Mitcham, MS

      Affiliations

    • School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA
    • ,
  • M.L. Runles, BS

      Affiliations

    • School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA
    • ,
  • P.J. Burns, PhD

      Affiliations

    • Burns BioSolutions, Lexington, KY
    • BioRelease Technologies, Birmingham, AL
    • ,
  • R.M. Gilley, MS

      Affiliations

    • BioRelease Technologies, Birmingham, AL

References 

  1. Kelley KK, Thompson DL, Storer WA, Mitcham PB, Gilley RM, Burns PJ. Estradiol interactions with dopamine antagonists in mares: Prolactin secretion and reproductive traits. J Equine Vet Sci. 2006;26:517–528
  2. Woodley SL, Burns PJ, Douglas RH, Oxender WD. Prolonged interovulatory interval after oestradiol treatment in mares. J Reprod Fertil (Suppl). 1979;27:205–209
  3. Thompson DL, Pickett BW, Squires EL, Nett TM. Effect of testosterone and estradiol-17-β alone and in combination on LH and FSH concentrations in pituitary and blood serum of geldings and in serum after GnRH. Biol Reprod. 1979;21:1231–1237
  4. Thompson DL, Garza F, St George RL, Rabb MH, Barry BE, French DE. Relationships among LH, FSH and prolactin secretion, storage and response to secretagogue and hypothalamic GnRH content in ovariectomized pony mares administered testosterone, dihydrotestosterone, estradiol, progesterone, dexamethasone or follicular fluid. Domest Anim Endocrinol. 1991;8:189–199
  5. Colborn DR, Thompson DL, Rahmanian MS, Roth TL. Plasma concentrations of cortisol, prolactin, luteinizing hormone, and follicle stimulating hormone in stallions after physical exercise and injection of secretagogue before and after sulpiride treatment in winter. J Anim Sci. 1991;69:3724–3732
  6. Thompson DL, Godke RA, Squires EL. Testosterone effects on mares during synchronization with altrenogest: FSH, LH, estrous duration and pregnancy rate. J Anim Sci. 1983;56:678–686
  7. Thompson DL, Reville SI, Walker MP, Derrick DJ, Papkoff H. Testosterone administration to mares during estrus: Duration of estrus and diestrus and concentrations of LH and FSH in plasma. J Anim Sci. 1983;56:911–918
  8. Steel RGD, Torrie JH, Dickey DA. Principles and procedures of statistics: a biometrical approach. 3rd ed.. New York: McGraw-Hill; 1997;
  9. Donadeu FX, Thompson DL. Administration of sulpiride to anovulatory mares in winter: effects on prolactin and gonadotropin concentrations, ovarian activity, ovulation and hair shedding. Theriogenology. 2002;57:963–976

 Approved for publication by the Director of the Louisiana Agricultural Experiment Station as manuscript No. 07-18-0357.

 Refereed

PII: S0737-0806(08)00067-1

doi: 10.1016/j.jevs.2008.02.009

Journal of Equine Veterinary Science
Volume 28, Issue 4 , Pages 232-237 , April 2008

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