Ninety-two Friesian cows were used to determine the chemical properties of cervical mucus
during normal estrus and estrus induced by progesterone (P4)-releasing intravaginal …

Twenty-three ewes were used in an experiment to determine the point in metabolism at
which prostaglandin (PG) F2α loses its luteolytic activity. Ewes exhibited at least one normal …

The present study tested the hypothesis that ovarian oestradiol increases the rate of uterine
involution after parturition in sheep. The day after parturition, ewes were randomly assigned …

A single dose of 8 or 16 mg of PGF 2α per 58 kg body weight was injected intramuscular into
intact, ovariectomized or hysterectomized 90–100 day pregnant sheep in three separate …

Ewes in the luteal phase of the estrous cycle were treated with prostaglandin F 2 α (PGF),
mated to rams at the ensuing estrus 2 days later, and necropsied at 2 or 23 hr after mating …

Uterine oxytocin receptors have been shown to play a major role in the regulation of uterine
prostaglandin F2 alpha release during the oestrous cycle and early pregnancy in sheep …

The responses of pregnant and nonpregnant ewes on day 13 post-estrus to a dose of
prostaglandin (PG) F2α known to be luteolytic in nonpregnant ewes were compared …

Two experiments were conducted to determine the effect of prostaglandin F2α (PGF2α),
phenylephrine and ergonovine on uterine contractions. In the first experiment, ewes were …

The effect of exogenous progesterone or megestrol acetate (MGA) on cervical extensibility
and on the concentrations of prostaglandin (PG) F in utero-ovarian plasma and …

Eighteen Holstein cows were randomly assigned to a control group or a treatment group on
the day after parturition (Day 0). The treatment started on Day 10 and consisted of …