?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=The+effect+of+pregnancy+and+stress+on+the+onset+of+placentophagia+in+Long-Evans+rats+&rft.creator=Kristal%2C+Dr.+Mark+B.&rft.creator=Peters%2C+L.+C.&rft.creator=Franz%2C+J.R.&rft.creator=Whitney%2C+J.F.&rft.creator=Nishita%2C+J.+Ken&rft.creator=Steuer%2C+M.+A.&rft.subject=Behavioral+Neuroscience&rft.description=Most+virgin+rats+do+not+eat+placenta+when+it+is+presented+to+them%3B+virtually+all+parturient+rats+do.+This+study+was+designed+to+examine+the+role+of+the+duration+and+termination+of+pregnancy+on+the+induction+of+placentophagia.+Time-bred+rats+determined+by+a+pretest+not+to+be+attracted+to+placenta+(nonplacentophages)%2C+were+tested+for+placentophagia+on+one+of+a+number+of+days+of+pregnancy.+A+comparable+group+was+tested+for+placentophagia+after+surgical+termination+of+pregnancy+on+Day+21.+Groups+of+virgins+were+run+controlling+for+the+time+interval+between+the+pretest+and+the+placentophagia+test%2C+and+for+a+time+interval+that+included+a+%22stressful%22+event.+The+results+were+that+(a)+the+incidence+of+placentophagia+rose+gradually+from+Day+7+to+Day+15+of+pregnancy%2C+then+remained+stable%2C+at+about+0.4+until+delivery%3B+(b)+pregnancy+termination+did+not+produce+an+effect+on+placentophagia+greater+than+that+of+unterminated+pregnancy%3B+(c)+a+pretest-test+interval+containing+a+%22stressful%22+event+produced+significantly+more+placentophagia+than+one+that+did+not+contain+such+an+event%3B+and+(d)+the+maximum+level+of+placentophagia+observed+during+pregnancy+was+the+same+as+that+produced+in+virgins+by+a+%22stressful%22+event.&rft.publisher=Pergamon+Press&rft.date=1981&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5765%2F1%2Fstress.pdf&rft.identifier=++Kristal%2C+Dr.+Mark+B.+and+Peters%2C+L.+C.+and+Franz%2C+J.R.+and+Whitney%2C+J.F.+and+Nishita%2C+J.+Ken+and+Steuer%2C+M.+A.++(1981)+The+effect+of+pregnancy+and+stress+on+the+onset+of+placentophagia+in+Long-Evans+rats.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5765%2F