Abstract
The effect of i.v. injected prostaglandins (PG) F 2 α and E 2 on intraluminal pressure of the different oviductal parts (infundibulum, magnum, isthmus, uterus and vagina) was investigated in the domestic hen. PGF 2 α induced only a pressure rise in all oviduct segments. Administration of PGE 2 resulted in variable changes in oviductal tone: pressure rise in the infundibulum; pressure increase often preceded by a small decrease in the magnum, isthmus and uterus; pressure decrease in the vagina and sometimes in the uterus. Simultaneous i.v. injection of both PG's induced mostly a decrease in vaginal tone. Intraluminal administration of PGF 2 α or E 2 resulted only in an increase in uterine pressure. The observed effects on oviduct tone are discussed and a possible in intervention of both PG's in the mechanism of ovum transport and oviposition in the domestic hen is proposed.
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