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  • Title: Intracerebral oxytocin is important for the onset of maternal behavior in inexperienced ewes delivered under peridural anesthesia.
    Author: Lévy F, Kendrick KM, Keverne EB, Piketty V, Poindron P.
    Journal: Behav Neurosci; 1992 Apr; 106(2):427-32. PubMed ID: 1590960.
    Abstract:
    Measurement of cerebrospinal concentrations of oxytocin (OT) in intact and peridural-anesthetized ewes showed that central release of OT during parturition is inhibited by this anesthesia. Also, observations of maternal behavior and attraction to amniotic fluid (AF) in inexperienced peridural-anesthetized parturient ewes after intracerebroventricular injections of either OT (2 x 10 micrograms) or saline showed that OT infusions increased the proportion of maternal females (2/17 vs. 10/20; p = .01) and attraction to AF. This study confirms that in sheep vaginocervical stimulation activates the oxytocinergic system, which induces the onset of maternal behavior, and that this action is not limited to maternally experienced females.
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