Comparative Aspects of Uterine-Luteal Relationships

Luteal function and oestrus in gilts treated with a synthetic analogue of prostaglandin F-2 (ICI 79,939) at various times during the oestrous cycle

“…The oestrous cycle of the mare can also be shortened by administration of PGF-2\g=a\ (Douglas & Ginther, 1972). Because the presence of the uterus is required for normal cyclic function in the pig (Anderson, Bland & Melampy, 1969) Seamark, Moor & Mclntosh (1974). The gilts were exposed to a vasectomized boar once daily to check for the occurrence of oestrus.…”

Progesterone Secretion From the Ovary in the Ewe Following Infusion of Uterine Venous Plasma

“…In sheep, as in pigs, guinea-pigs and cows, the uterus appears to influence luteal regression (for review, see Anderson, Bland & Melampy, 1969). It has been suggested that the uterus releases a luteolytic substance at the time of luteal regression which reaches the adjacent ovary (Short, 1967).…”

Division of the Uterine Vein and the Function of the Adjacent Ovary in the Ewe

“…The fact that hysterectomy in the ewe results in maintenance of the CL (Wiltbank & Casida, 1956) suggests that luteal regression in this species, as in the guinea-pig, cow and pig (Anderson, Bland & Melampy, 1969), is influenced by the uterus. The local nature of this phenomenon was demonstrated in a series of experiments in which persistence of the CL was shown to depend on the quantity of uterine horn remaining attached to the adjacent ovary (Moor & Rowson, 1966;Moor, 1968).…”