title: Vaginal pH during estrus in mares.
abstract: Vaginal hydrogen ion concentration of Saddlebred mares was measured throughout the behavioral estrous period. The mean pH on the day of ovulation was significantly (P = <.01) lower than on all other tested days of estrus. Follicular development and vaginal pH values in pony mares at time of slaughter were highly correlated. A significant decrease in vaginal pH values, determined through a series of carefully monitored measurements during estrus, was found to be characteristic and indicative of ovulation.
authors.affiliation: Department of Animal Industries, Southern Illinois University, Carbondale, Illinois 62901, USA.
authors.forename: K L
authors.initials: KL
authors.lastname: Polak
authors.forename: W G
authors.initials: WG
authors.lastname: Kammlade