Luteinizing hormone during sexual maturation in pony mares.
Luteinizing hormone (LH) was quantified in pony mares during artificially induced sexual maturation. Ovarian follicular development was also assessed by rectal palpation of the ovaries. With the exception of large periovulatory LH concentrations in two mares that ovulated, LH concentrations were not significantly different in mares undergoing sexual maturation and thus having marked follicular development when compared with mares that were not undergoing sexual maturation and thus did not have marked follicular development. These results indicate a dissociation in time between the onset of follicular development and the increase in LH which is associated with the first ovulation of the year.
D000818:Animals; D005260:Female; D006736:Horses / Q000502:physiology*; D007986:Luteinizing Hormone / Q000097:blood* / Q000502:physiology; D010060:Ovulation; D012621:Seasons; D012741:Sexual Maturation
D007986:Luteinizing Hormone