Journal of Equine Veterinary Science
Volume 26, Issue 2 , Pages 55-58 , February 2006

Ovarian activity of the mare during winter and spring at a latitude of 19° 21′ north

  • M. Boeta, MVZ, MS

      Affiliations

    • Corresponding Author InformationReprint requests: Myriam Boeta, Puno 945 Colonia Lindavista CP, 07300, Mexico City, Mexico
    • Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510, México D.F.
    • ,
  • A. Porras, MVZ, DCV

      Affiliations

    • Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510, México D.F.
    • ,
  • L.A. Zarco, MVZ, PhD

      Affiliations

    • Departamento de Reproducción, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510, México D.F.
    • ,
  • R. Aguirre-Hernández, PhD

      Affiliations

    • Coordinación del Programa de Maestría y Doctorado en Ciencias Médicas, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad Universitaria 04510, México D.F.

References 

  1. Palmer E , Guillaume D . Photoperiodism in the equine species: what is a long night? . Anim Reprod Sci . 1992;28:21–30
  2. Nagy P , Guillaume D , Daels P . Seasonality in mares . Anim Reprod Sci . 2000;60-61:245–262
  3. Ginther OJ . Folicullogenesis during the transitional period and early ovulatory season in mares . J Reprod Fertil . 1990;90:311–320
  4. Ginther OJ . Occurrence of anestrus, diestrus and ovulation over a 12-month period in mares . Am J Vet Res . 1974;35:1173–1179
  5. González AF , Valencia JJ . Estudio del Comportamiento reproductivo de la yegua en México . Vet Méx . 1977;8:19–21
  6. Saltiel A , Calderón A , García N , Hurley DP . Ovarian activity in the mare between latitude 15° and 22° . N. J Reprod Fert . 1982;32(Suppl):261–267
  7. INEGI. Instituto Nacional de Estadística, Geografía e Informática, México: Anuario Estadístico del Distrito Federal, Edición 1997.
  8. Pulido A , Zarco L , Galina C , et al.   Progesterone metabolism during storage of blood samples from Gyr cattle: effects of anticoagulant, time and temperature of incubation . Theriogenology . 1991;35:965–975
  9. Allen WR , Sanderson MW , Greenwood RE , et al.   Induction of ovulation in anoestrous mares with a slow-release implant of a GnRH analogue (ICI 118 630) . J Reprod Fert . 1987;35(Suppl):469–478
  10. Koskinen E , Huhtinen M , Katila T . Serum progesterone levels in mares in winter and during transitional periods . Acta Vet. Scandinavica . 1996;37:409–414
  11. Sharp D . Transition into the breeding season: Clues to the mechanisms of seasonality . Equine Vet J . 1998;20:159–161
  12. Allen WR . Practical control of anoestrus in Thoroughbred . In: Ellendorff F , Ellseasser F editor. Endocrine causes of seasonal and lactational anestrus in farm animals . Dordrecht: Martinus Nijhoff Publishers; 1985;p. 98–107
  13. King SS , Neumann KR , Nequin LG , et al.   Time of onset and ovarian state prior to entry into winter anestrus . J of Equine Veter Sci . 1993;13:512–515

 Refereed

PII: S0737-0806(05)00605-2

doi: 10.1016/j.jevs.2005.12.003

Journal of Equine Veterinary Science
Volume 26, Issue 2 , Pages 55-58 , February 2006

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