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

Administration of exogenous prostaglandins at the time of mating may improve fertility via
their effects on uterine contractility. The present study was undertaken to compare the effects …

Eight experiments were conducted with 451 ewes to test effects of ergonovine,
prostaglandin F2α (PGF2α) and phenylephrine on sperm transport and fertility. In most …

The site of origin of uterine contractions was studied in 4 groups of ovariectomized ewes 24
h after the following treatments: none, 250 mg of cycloheximide, 45 μ g of estradiol or 45 μ g …

Ewes were injected intramuscularly with prostaglandin F2α-THAM (PG) on day 9 of an
estrous cycle. Of 17 ewes given a single dose of 1, 2, 5 or 10 mg of PG, only two were in …

The in vitro motility of strips of myometrium was studied in estrous ewes after administration
of melengestrol acetate (MGA), medroxyprogesterone acetate (MAP) or prostaglandin F 2α …

Uterine contractions were observed in 90 estrous ewes in an experiment of 3× 2× 3 factorial
design. Ewes were in normal unregulated estrus or in prostaglandin or progestogen …

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 …

Prostanoid receptors regulating the contractility of strips of myometrium obtained from
nonpregnant ewes during the breeding season were classified pharmacologically. Natural …

Twenty ovariectomized ewes were used in an experiment designed to examine the
interaction of progesterone, estradiol, and oxytocin in the regulation of uterine secretion of …