Fig. 2From: The vaginal and uterine blood flow changes during the ovsynch program and its impact on the pregnancy rates in Holstein dairy cowsChanges in pulsatility index (PI), resistance index (RI), systolic/diastolic(S/D), and diameter (D) changes in the uterine artery in response to the GnRH:PGF2α management program. Values are means ± standard error of mean (SEM). Means with different superscripts (a, b, c) are significantly different (P < .05)Back to article page