Photoperiodism in the equine species — what is a long night?

This publication has 11 references indexed in Scilit:

• Influence of pregnancy on diurnal and seasonal changes in cortisol, T3 and T4 levels in the mare blood serum
  Comparative Biochemistry and Physiology Part A: Physiology, 1991
• Photoperiodic Disruption of Photorefractoriness in the Ewe1
  Biology of Reproduction, 1988
• Melatonin patterns in ewes maintained under skeleton or resonance photoperiodic regimens
  Reproduction Nutrition Développement, 1988
• Photoperiodic history and a changing melatonin pattern can determine the neuroendocrine response of the ewe to daylength
  Reproduction, 1987
• Daily Rhythm of Cortisol, and Evidence for a Photo-Inducible Phase for Prolactin Secretion in Nonpregnant Mares Housed under Non-Interrupted and Skeleton Photoperiods2
  Journal of Animal Science, 1986
• Effects of lighting programs on onset of the ovulatory season in mares
  Theriogenology, 1985
• Effects of Interrupted Photoperiods on the Induction of Ovulation in Anestrous Mares
  Journal of Animal Science, 1985
• Some interactions of season of foaling, photoperiod and ovarian activity in the equine
  Livestock Production Science, 1983
• Induction of Ovulation and Multiple Ovulations in Seasonally Anovulatory and Ovulatory Mares with an Equine Pituitary Extract
  Journal of Animal Science, 1977
• Transition from anoestrus in the mare and the effects of artificial lighting
  The Journal of Agricultural Science, 1947