Observation of uetrine contractions in ewes treated with prostaglandin F2α

概要

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An experiment was conducted to determine whether the administration of prostaglandin F2α (PGF2α) affects the pattern of uterine contractions at 8, 16 and 24 hours after the detection of estrus. Uterine contractions were observed by laparotomy under intravenous anaesthesia with 8 to 10 ml of pentobalbital-Na. According to the method of CROKER and SHELTON (1973), individual contractions were classified as moving towards the body of the uterus, moving towards the oviducts, or in neither direction (i.e. stationary). There was no significant difference between the treated and the control groups in the total number of contractions and in the three classification of contractions. The proportions of total contractions moving towards the oviducts, not moving clearly in either direction, or moving towards the cervix, were 51.1%, 25.5% and 23.4% in the PGF2c, group, and 49.8%, 32.5% and 17.7% in the control group. PGF2α treatment did not decrease the number of contractions moving towards the oviducts and resulted in a similar pattern of uterine contractions to that in the control group.
日本繁殖生物学会の論文